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test(accuracy): ratchet 77.0% -> 77.3% via unsized-cylinder storage-loss fix

Browse source 
A hot-water cylinder lodging gov-API `cylinder_size=0` ("size not
determined", with has_hot_water_cylinder=true) resolved to a None volume
in `_cylinder_storage_loss_override` (which reads `_cylinder_volume_l_
from_code`, returning None for code 0). The subsequent `if volume_l is
None: return None` then DROPPED the cylinder's Table-2 storage loss
entirely — under-costing the DHW and over-rating the dwelling. Meanwhile
the Table-13 high-rate-fraction path already used `_hot_water_cylinder_
volume_l` (which defaults size 0 to 110 L), so the two DHW paths
disagreed on the same cylinder.

RdSAP 10 §10.5 Table 28 ("if the actual size is not determined, the size
is taken as according to Table 28") makes an unsized present cylinder the
110 L "Normal" baseline, which STILL incurs the storage loss. Fixed by
defaulting the storage-loss volume to 110 L for the explicit size-0 case.

Gated on the EXPLICIT 0 (not None): a full-SAP cert whose RdSAP
cylinder_size is simply unlodged (None, e.g. pinned 10091568921) keeps
its own cylinder handling rather than a forced 110 L RdSAP default.

7 corpus certs lodge cylinder_size=0 + has_cylinder=true. Gauge: within
77.0% -> 77.3%, SAP MAE ~flat (0.648), CO2 0.074 -> 0.073, PE 3.2 -> 3.05
(the previously-dropped storage loss now correctly counted in the demand
cascade). Unit-pinned in test_cert_to_inputs (storage loss non-None for
size 0); RealCertExpectation 200004017091 = 71.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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372
backend/epc_api/json_samples/real_life_examples/RdSAP-Schema-21.0.1/uprn_200004017091/epc.json Normal file
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@ -0,0 +1,372 @@
{
"uprn": 200004017091,
"roofs": [
{
"description": "Pitched, 100 mm loft insulation",
"energy_efficiency_rating": 3,
"environmental_efficiency_rating": 3
}
],
"walls": [
{
"description": "Timber frame, as built, insulated (assumed)",
"energy_efficiency_rating": 4,
"environmental_efficiency_rating": 4
}
],
"floors": [
{
"description": "Solid, no insulation (assumed)",
"energy_efficiency_rating": 0,
"environmental_efficiency_rating": 0
}
],
"status": "entered",
"tenure": 1,
"window": {
"description": "Fully double glazed",
"energy_efficiency_rating": 2,
"environmental_efficiency_rating": 2
},
"addendum": {
"addendum_numbers": [
15
]
},
"lighting": {
"description": "Good lighting efficiency",
"energy_efficiency_rating": 4,
"environmental_efficiency_rating": 4
},
"postcode": "BN14 9EL",
"hot_water": {
"description": "From main system, no cylinder thermostat",
"energy_efficiency_rating": 3,
"environmental_efficiency_rating": 3
},
"post_town": "WORTHING",
"built_form": 3,
"created_at": "2026-04-21 13:18:06",
"door_count": 2,
"region_code": 14,
"report_type": 2,
"sap_heating": {
"number_baths": 1,
"cylinder_size": 0,
"number_baths_wwhrs": 0,
"water_heating_code": 901,
"water_heating_fuel": 26,
"main_heating_details": [
{
"has_fghrs": "N",
"main_fuel_type": 26,
"boiler_flue_type": 2,
"fan_flue_present": "Y",
"heat_emitter_type": 1,
"emitter_temperature": 0,
"main_heating_number": 1,
"main_heating_control": 2106,
"main_heating_category": 2,
"main_heating_fraction": 1,
"central_heating_pump_age": 0,
"main_heating_data_source": 1,
"main_heating_index_number": 17803
}
],
"immersion_heating_type": "NA",
"has_fixed_air_conditioning": "false"
},
"sap_version": 10.2,
"sap_windows": [
{
"pvc_frame": "true",
"glazing_gap": "16+",
"orientation": 1,
"window_type": 1,
"glazing_type": 3,
"window_width": 1.1,
"window_height": 1.2,
"draught_proofed": "true",
"window_location": 0,
"window_wall_type": 1,
"permanent_shutters_present": "N",
"permanent_shutters_insulated": "N"
},
{
"pvc_frame": "true",
"glazing_gap": "16+",
"orientation": 1,
"window_type": 1,
"glazing_type": 3,
"window_width": 1.1,
"window_height": 1.2,
"draught_proofed": "true",
"window_location": 0,
"window_wall_type": 1,
"permanent_shutters_present": "N",
"permanent_shutters_insulated": "N"
},
{
"pvc_frame": "true",
"glazing_gap": "16+",
"orientation": 5,
"window_type": 1,
"glazing_type": 3,
"window_width": 1.1,
"window_height": 1.2,
"draught_proofed": "true",
"window_location": 0,
"window_wall_type": 1,
"permanent_shutters_present": "N",
"permanent_shutters_insulated": "N"
},
{
"pvc_frame": "true",
"glazing_gap": "16+",
"orientation": 5,
"window_type": 1,
"glazing_type": 3,
"window_width": 0.8,
"window_height": 0.8,
"draught_proofed": "true",
"window_location": 0,
"window_wall_type": 1,
"permanent_shutters_present": "N",
"permanent_shutters_insulated": "N"
},
{
"pvc_frame": "true",
"glazing_gap": "16+",
"orientation": 5,
"window_type": 1,
"glazing_type": 3,
"window_width": 1.5,
"window_height": 0.8,
"draught_proofed": "true",
"window_location": 0,
"window_wall_type": 1,
"permanent_shutters_present": "N",
"permanent_shutters_insulated": "N"
}
],
"schema_type": "RdSAP-Schema-21.0.1",
"uprn_source": "Energy Assessor",
"country_code": "ENG",
"main_heating": [
{
"description": "Boiler and radiators, mains gas",
"energy_efficiency_rating": 4,
"environmental_efficiency_rating": 4
}
],
"air_tightness": {
"description": "(not tested)",
"energy_efficiency_rating": 0,
"environmental_efficiency_rating": 0
},
"dwelling_type": "End-terrace house",
"language_code": 1,
"pressure_test": 4,
"property_type": 0,
"address_line_1": "3 Radbone Close",
"assessment_type": "RdSAP",
"completion_date": "2026-04-21",
"inspection_date": "2026-04-20",
"extensions_count": 0,
"measurement_type": 1,
"total_floor_area": 65,
"transaction_type": 1,
"conservatory_type": 1,
"heated_room_count": 4,
"registration_date": "2026-04-21",
"sap_energy_source": {
"mains_gas": "Y",
"meter_type": 2,
"pv_connection": 0,
"photovoltaic_supply": {
"none_or_no_details": {
"percent_roof_area": 0
}
},
"wind_turbines_count": 0,
"gas_smart_meter_present": "false",
"is_dwelling_export_capable": "false",
"wind_turbines_terrain_type": 2,
"electricity_smart_meter_present": "false"
},
"secondary_heating": {
"description": "None",
"energy_efficiency_rating": 0,
"environmental_efficiency_rating": 0
},
"extract_fans_count": 1,
"sap_building_parts": [
{
"identifier": "Main Dwelling",
"wall_dry_lined": "N",
"wall_thickness": 280,
"floor_heat_loss": 7,
"roof_construction": 4,
"wall_construction": 5,
"building_part_number": 1,
"sap_floor_dimensions": [
{
"floor": 0,
"room_height": {
"value": 2.37,
"quantity": "metres"
},
"floor_insulation": 1,
"total_floor_area": {
"value": 32.38,
"quantity": "square metres"
},
"party_wall_length": {
"value": 7.42,
"quantity": "metres"
},
"floor_construction": 1,
"heat_loss_perimeter": {
"value": 16.15,
"quantity": "metres"
}
},
{
"floor": 1,
"room_height": {
"value": 2.35,
"quantity": "metres"
},
"total_floor_area": {
"value": 32.37,
"quantity": "square metres"
},
"party_wall_length": {
"value": 7.42,
"quantity": "metres"
},
"heat_loss_perimeter": {
"value": 16.15,
"quantity": "metres"
}
}
],
"wall_insulation_type": 4,
"construction_age_band": "G",
"party_wall_construction": 0,
"wall_thickness_measured": "Y",
"roof_insulation_location": 2,
"roof_insulation_thickness": "100mm",
"wall_insulation_thickness": "NI",
"floor_insulation_thickness": "NI"
}
],
"solar_water_heating": "N",
"habitable_room_count": 4,
"heating_cost_current": {
"value": 556,
"currency": "GBP"
},
"insulated_door_count": 0,
"co2_emissions_current": 2.2,
"energy_rating_average": 60,
"energy_rating_current": 71,
"lighting_cost_current": {
"value": 51,
"currency": "GBP"
},
"main_heating_controls": [
{
"description": "Programmer, room thermostat and TRVs",
"energy_efficiency_rating": 4,
"environmental_efficiency_rating": 4
}
],
"has_hot_water_cylinder": "true",
"heating_cost_potential": {
"value": 516,
"currency": "GBP"
},
"hot_water_cost_current": {
"value": 333,
"currency": "GBP"
},
"mechanical_ventilation": 0,
"percent_draughtproofed": 71,
"suggested_improvements": [
{
"sequence": 1,
"typical_saving": {
"value": 44,
"currency": "GBP"
},
"indicative_cost": "\u00a35,000 - \u00a310,000",
"improvement_type": "W2",
"improvement_details": {
"improvement_number": 58
},
"improvement_category": 5,
"energy_performance_rating": 73,
"environmental_impact_rating": 74
},
{
"sequence": 2,
"typical_saving": {
"value": 143,
"currency": "GBP"
},
"indicative_cost": "\u00a34,000 - \u00a37,000",
"improvement_type": "N",
"improvement_details": {
"improvement_number": 19
},
"improvement_category": 5,
"energy_performance_rating": 76,
"environmental_impact_rating": 79
},
{
"sequence": 3,
"typical_saving": {
"value": 212,
"currency": "GBP"
},
"indicative_cost": "\u00a38,000 - \u00a310,000",
"improvement_type": "U",
"improvement_details": {
"improvement_number": 34
},
"improvement_category": 5,
"energy_performance_rating": 81,
"environmental_impact_rating": 80
}
],
"co2_emissions_potential": 1.5,
"energy_rating_potential": 81,
"lighting_cost_potential": {
"value": 51,
"currency": "GBP"
},
"schema_version_original": "21.0.1",
"hot_water_cost_potential": {
"value": 186,
"currency": "GBP"
},
"renewable_heat_incentive": {
"water_heating": 3562.39,
"space_heating_existing_dwelling": 4593.09
},
"draughtproofed_door_count": 0,
"energy_consumption_current": 184,
"has_fixed_air_conditioning": "false",
"multiple_glazed_proportion": 100,
"calculation_software_version": "5.02r0342",
"energy_consumption_potential": 118,
"environmental_impact_current": 72,
"current_energy_efficiency_band": "C",
"environmental_impact_potential": 80,
"has_heated_separate_conservatory": "false",
"potential_energy_efficiency_band": "B",
"co2_emissions_current_per_floor_area": 33,
"low_energy_fixed_lighting_bulbs_count": 12,
"incandescent_fixed_lighting_bulbs_count": 0
}

12
domain/sap10_calculator/rdsap/cert_to_inputs.py
View file

@ -7104,6 +7104,18 @@ def _cylinder_storage_loss_override(
# 550 kWh/yr). The Table-2b temperature factor still applies (49)→(50).
declared_loss = _float_or_none(getattr(sh, "cylinder_heat_loss", None))
volume_l = _cylinder_volume_l_from_code(epc)
if volume_l is None and _int_or_none(sh.cylinder_size) == 0:
# gov-API cylinder_size=0 = "size not determined" for a present
# cylinder (has_hot_water_cylinder=true). RdSAP 10 §10.5 Table 28:
# "If the actual size is not determined, the size ... is taken as
# according to Table 28" → the "Normal" 110 L baseline, which STILL
# incurs a storage loss. Without this the code lookup returned None
# and the `if volume_l is None: return None` below dropped the loss,
# under-costing the DHW (7 corpus certs; e.g. 200004017091 +1.75 ->
# +0.39). Gated on the EXPLICIT 0 so a full-SAP cert whose RdSAP
# cylinder_size is simply unlodged (None, e.g. 10091568921) keeps its
# own cylinder handling rather than a forced 110 L RdSAP default.
volume_l = _CYLINDER_SIZE_NOT_DETERMINED_L
if declared_loss is not None:
storage_56m = cylinder_storage_loss_monthly_kwh(
volume_l=volume_l or 0.0,

376
scripts/corpus_1000/worklist.md
View file

@ -1,10 +1,10 @@
# RdSAP-21.0.1 corpus campaign ledger
**Gauge:** 1000 computed / 0 skipped · SAP within-0.5 = **77.0%** · MAE = **0.647** (floors in test_sap_accuracy_corpus.py)
**Gauge:** 1000 computed / 0 skipped · SAP within-0.5 = **77.3%** · MAE = **0.648** (floors in test_sap_accuracy_corpus.py)
Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail engine bug · ⛔ unbuildable. Line: `uprn · lodged L / eng E / Δ · signature`. Rebuild/re-rank: `PYTHONPATH=. python scripts/corpus_1000/build_worklist.py` (preserves statuses & `<-` notes).
## Clusters (certs with |Δ| ≥ 0.5, ranked by summed |Δ|) — 230 certs in 222 clusters
## Clusters (certs with |Δ| ≥ 0.5, ranked by summed |Δ|) — 227 certs in 220 clusters
### C001 · Σ|Δ| 23.9 · 1 certs · `hpcdb100053/elec | solid brick | (another dwelling | sec:room heaters`
- ⚠ `4510053280` · L 51 / E 74.94 / Δ +23.94 <- lodged software billed out-of-range-PSR (2.031 > 2.0) PCDB 100053 as 100% direct electric; engine follows SAP10.2 N2 extension (305%), Elmhurst-validated on case 56. Pinned engine 75 in test_real_cert_sap_accuracy.
@ -12,8 +12,8 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
### C002 · Σ|Δ| 19.7 · 1 certs · `h301/coal-anth | cavity wall | pitched unknown | whw903`
- [ ] `103001004` · L 50 / E 69.69 / Δ +19.69 <- needs Elmhurst arbitration: lodged hw £1054 vs ours £113 (single-immersion on-peak fraction + cylinder declared-loss 1.8 kWh/day vs Table-2-sized loss); register data can't decompose. Other 14 declared-loss certs match lodged; only sibling outlier is 100121325434 (C008).
### C003 · Σ|Δ| 14.5 · 1 certs · `h195/elec | system built | (another dwelling`
- [ ] `10012334488` · L 72 / E 86.47 / Δ +14.47
### C003 · Σ|Δ| 13.2 · 1 certs · `h195/elec | system built | (another dwelling`
- [ ] `10012334488` · L 72 / E 85.20 / Δ +13.20
### C004 · Σ|Δ| 13.1 · 1 certs · `hpcdb10326/gas | solid brick | pitched 75 | ext1,sec:room heaters`
- [ ] `12109191` · L 58 / E 71.10 / Δ +13.10
@ -42,55 +42,54 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
### C011 · Σ|Δ| 6.7 · 1 certs · `h691/elec | solid brick | pitched 100 | RR,ext1,whw909`
- [ ] `100032223878` · L 11 / E 17.67 / Δ +6.67
### C012 · Σ|Δ| 6.5 · 1 certs · `h408/elec | granite or | (another dwelling | sec:portable electric,whw903`
### C012 · Σ|Δ| 6.5 · 1 certs · `h191/elec | cavity wall | (another dwelling`
- [ ] `10002272664` · L 79 / E 72.47 / Δ -6.53
### C013 · Σ|Δ| 6.5 · 1 certs · `h408/elec | granite or | (another dwelling | sec:portable electric,whw903`
- [ ] `100121397382` · L 69 / E 75.49 / Δ +6.49
### C013 · Σ|Δ| 6.5 · 1 certs · `h691/elec | solid brick | (another dwelling | ext1,sec:room heaters,whw903`
### C014 · Σ|Δ| 6.5 · 1 certs · `h691/elec | solid brick | (another dwelling | ext1,sec:room heaters,whw903`
- [ ] `100062100640` · L 54 / E 47.51 / Δ -6.49
### C014 · Σ|Δ| 6.0 · 1 certs · `h301/coal-anth | cavity wall | pitched 225`
### C015 · Σ|Δ| 6.0 · 1 certs · `h301/coal-anth | cavity wall | pitched 225`
- [ ] `100050844968` · L 71 / E 65.02 / Δ -5.98
### C015 · Σ|Δ| 5.8 · 1 certs · `hpcdb17777/gas+2mains | cavity wall | pitched insulated | ext1,sec:room heaters,whw914`
### C016 · Σ|Δ| 5.8 · 1 certs · `hpcdb17777/gas+2mains | cavity wall | pitched insulated | ext1,sec:room heaters,whw914`
- [ ] `line804` · L 52 / E 57.76 / Δ +5.76
### C016 · Σ|Δ| 5.6 · 2 certs · `h402/elec | solid brick | (another dwelling | sec:portable electric,whw903`
- [ ] `11071248` · L 78 / E 81.86 / Δ +3.86
- [ ] `12126160` · L 69 / E 70.71 / Δ +1.71
### C017 · Σ|Δ| 5.8 · 1 certs · `h408/elec+2mains | sandstone as | (another dwelling | sec:room heaters,whw903`
- [ ] `80838` · L 41 / E 35.25 / Δ -5.75
### C017 · Σ|Δ| 4.6 · 1 certs · `hpcdb18560/gas | solid brick | pitched no | RR`
### C018 · Σ|Δ| 4.6 · 1 certs · `hpcdb18560/gas | solid brick | pitched no | RR`
- [ ] `100051233481` · L 65 / E 69.64 / Δ +4.64
### C018 · Σ|Δ| 4.5 · 1 certs · `h691/elec | timber frame | pitched limited | RR,ext2,whw903`
### C019 · Σ|Δ| 4.5 · 1 certs · `h691/elec | timber frame | pitched limited | RR,ext2,whw903`
- [ ] `100061646773` · L 68 / E 63.46 / Δ -4.54
### C019 · Σ|Δ| 4.5 · 1 certs · `hpcdb18786/fuel27 | solid brick | pitched 100 | RR,consv3`
### C020 · Σ|Δ| 4.5 · 1 certs · `hpcdb18786/fuel27 | solid brick | pitched 100 | RR,consv3`
- [ ] `100071010014` · L 55 / E 50.47 / Δ -4.53
### C020 · Σ|Δ| 4.5 · 1 certs · `hpcdb17815/gas | cavity wall | flat insulated`
### C021 · Σ|Δ| 4.5 · 1 certs · `hpcdb17815/gas | cavity wall | flat insulated`
- [ ] `47084930` · L 74 / E 69.51 / Δ -4.49
### C021 · Σ|Δ| 4.5 · 1 certs · `h301/coal-anth | system built | (another dwelling | mv4`
### C022 · Σ|Δ| 4.5 · 1 certs · `h301/coal-anth | system built | (another dwelling | mv4`
- [ ] `10093342182` · L 82 / E 77.51 / Δ -4.49
### C022 · Σ|Δ| 4.4 · 1 certs · `hpcdb17973/gas | solid brick | (another dwelling`
### C023 · Σ|Δ| 4.4 · 1 certs · `hpcdb17973/gas | solid brick | (another dwelling`
- [ ] `5117280` · L 76 / E 71.56 / Δ -4.44
### C023 · Σ|Δ| 4.4 · 1 certs · `h191/elec | solid brick | (another dwelling | ext2`
### C024 · Σ|Δ| 4.4 · 1 certs · `h191/elec | solid brick | (another dwelling | ext2`
- [ ] `217060420` · L 42 / E 37.58 / Δ -4.42
### C024 · Σ|Δ| 4.4 · 1 certs · `h402/elec | cavity wall | (another dwelling | sec:room heaters,whw903`
### C025 · Σ|Δ| 4.4 · 1 certs · `h402/elec | cavity wall | (another dwelling | sec:room heaters,whw903`
- [ ] `72399971` · L 69 / E 64.60 / Δ -4.40
### C025 · Σ|Δ| 4.4 · 1 certs · `hpcdb19258/fuel28 | granite or | pitched no | ext2,sec:room heaters`
### C026 · Σ|Δ| 4.4 · 1 certs · `hpcdb19258/fuel28 | granite or | pitched no | ext2,sec:room heaters`
- [ ] `10007016314` · L 57 / E 52.64 / Δ -4.36
### C026 · Σ|Δ| 4.1 · 1 certs · `h633/heatnet | sandstone with | pitched insulated | sec:room heaters,whw903`
### C027 · Σ|Δ| 4.1 · 1 certs · `h633/heatnet | sandstone with | pitched insulated | sec:room heaters,whw903`
- [ ] `100052159386` · L 56 / E 51.92 / Δ -4.08
### C027 · Σ|Δ| 4.0 · 1 certs · `h191/elec | cavity wall | (another dwelling`
- [ ] `10002272664` · L 79 / E 74.96 / Δ -4.04
### C028 · Σ|Δ| 4.0 · 1 certs · `h408/elec | cavity wall | pitched 100 | ext1,sec:room heaters,whw903`
- [ ] `100040767294` · L 43 / E 47.04 / Δ +4.04
@ -112,77 +111,77 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
### C034 · Σ|Δ| 3.3 · 1 certs · `h402/elec | cavity wall | pitched 150 | ext1,sec:room heaters,whw903`
- [ ] `200004818752` · L 34 / E 30.73 / Δ -3.27
### C035 · Σ|Δ| 3.2 · 1 certs · `hpcdb18759/gas | sandstone as | pitched insulated | RR,ext1,sec:room heaters`
### C035 · Σ|Δ| 3.2 · 1 certs · `hpcdb1770/fuel28 | solid brick | pitched no | ext3,sec:room heaters`
- [ ] `200004522639` · L 37 / E 33.77 / Δ -3.23
### C036 · Σ|Δ| 3.2 · 1 certs · `hpcdb18759/gas | sandstone as | pitched insulated | RR,ext1,sec:room heaters`
- [ ] `72351021` · L 64 / E 60.85 / Δ -3.15
### C036 · Σ|Δ| 3.1 · 1 certs · `h633/heatnet | timber frame | roof room(s) | RR,ext1,sec:room heaters,whw909`
### C037 · Σ|Δ| 3.1 · 1 certs · `h633/heatnet | timber frame | roof room(s) | RR,ext1,sec:room heaters,whw909`
- [ ] `22077224` · L 37 / E 33.90 / Δ -3.10
### C037 · Σ|Δ| 3.0 · 1 certs · `hpcdb18498/gas | solid brick | pitched 250 | RR,ext2`
### C038 · Σ|Δ| 3.0 · 1 certs · `hpcdb18498/gas | solid brick | pitched 250 | RR,ext2`
- [ ] `10011740578` · L 70 / E 67.00 / Δ -3.00
### C038 · Σ|Δ| 2.9 · 1 certs · `h402/elec | cavity wall | pitched 250 | sec:portable electric,whw903`
### C039 · Σ|Δ| 2.9 · 1 certs · `h402/elec | cavity wall | pitched 250 | sec:portable electric,whw903`
- [ ] `100110680822` · L 79 / E 76.07 / Δ -2.93
### C039 · Σ|Δ| 2.9 · 1 certs · `h301/coal-anth | solid brick | pitched 250`
### C040 · Σ|Δ| 2.9 · 1 certs · `h301/coal-anth | solid brick | pitched 250`
- [ ] `452032915` · L 75 / E 72.09 / Δ -2.91
### C040 · Σ|Δ| 2.9 · 1 certs · `h301/coal-anth | cavity wall | (another dwelling | whw909`
### C041 · Σ|Δ| 2.9 · 1 certs · `h301/coal-anth | cavity wall | (another dwelling | whw909`
- [ ] `100071306639` · L 73 / E 70.14 / Δ -2.86
### C041 · Σ|Δ| 2.9 · 1 certs · `hpcdb18435/gas+2mains | cavity wall | pitched 100 | ext3,sec:room heaters,whw903`
### C042 · Σ|Δ| 2.9 · 1 certs · `hpcdb18435/gas+2mains | cavity wall | pitched 100 | ext3,sec:room heaters,whw903`
- [ ] `100061346049` · L 55 / E 52.15 / Δ -2.85
### C042 · Σ|Δ| 2.7 · 1 certs · `hpcdb8443/fuel28 | cavity wall | pitched 100 | RR,ext2,sec:room heaters`
### C043 · Σ|Δ| 2.7 · 1 certs · `hpcdb8443/fuel28 | cavity wall | pitched 100 | RR,ext2,sec:room heaters`
- [ ] `10013008238` · L 41 / E 38.26 / Δ -2.74
### C043 · Σ|Δ| 2.7 · 3 certs · `h691/elec | cavity wall | (another dwelling | whw903`
### C044 · Σ|Δ| 2.7 · 3 certs · `h691/elec | cavity wall | (another dwelling | whw903`
- [ ] `10033187652` · L 70 / E 71.21 / Δ +1.21
- [ ] `200002730` · L 65 / E 64.13 / Δ -0.87
- [ ] `10023328117` · L 78 / E 78.64 / Δ +0.64
### C044 · Σ|Δ| 2.7 · 1 certs · `h633/heatnet | cavity wall | pitched 200 | RR,sec:room heaters,whw903`
### C045 · Σ|Δ| 2.7 · 1 certs · `h633/heatnet | cavity wall | pitched 200 | RR,sec:room heaters,whw903`
- [ ] `10004873253` · L 65 / E 62.29 / Δ -2.71
### C045 · Σ|Δ| 2.7 · 1 certs · `h691/elec | cavity wall | (another dwelling | mv1,whw903`
### C046 · Σ|Δ| 2.7 · 1 certs · `h691/elec | cavity wall | (another dwelling | mv1,whw903`
- [ ] `10090793715` · L 73 / E 75.71 / Δ +2.71
### C046 · Σ|Δ| 2.7 · 1 certs · `hpcdb17964/gas+2mains | cavity wall | pitched 100 | ext1,sec:room heaters`
### C047 · Σ|Δ| 2.7 · 1 certs · `hpcdb17964/gas+2mains | cavity wall | pitched 100 | ext1,sec:room heaters`
- [ ] `100120745600` · L 65 / E 67.69 / Δ +2.69
### C047 · Σ|Δ| 2.7 · 1 certs · `hpcdb17757/gas | granite or | pitched no | RR,ext1`
### C048 · Σ|Δ| 2.7 · 1 certs · `hpcdb17757/gas | granite or | pitched no | RR,ext1`
- [ ] `100051178830` · L 63 / E 65.66 / Δ +2.66
### C048 · Σ|Δ| 2.6 · 1 certs · `hpcdb10321/gas | sandstone as | pitched 100 | ext2`
### C049 · Σ|Δ| 2.6 · 1 certs · `hpcdb10321/gas | sandstone as | pitched 100 | ext2`
- [ ] `100120018282` · L 64 / E 61.36 / Δ -2.64
### C049 · Σ|Δ| 2.6 · 1 certs · `hpcdb17968/gas | cavity wall | pitched 300 | ext2,sec:room heaters`
### C050 · Σ|Δ| 2.6 · 1 certs · `hpcdb17968/gas | cavity wall | pitched 300 | ext2,sec:room heaters`
- [ ] `83035979` · L 65 / E 67.60 / Δ +2.60
### C050 · Σ|Δ| 2.5 · 1 certs · `h524/elec | solid brick | (another dwelling | consv2,sec:room heaters,whw909`
### C051 · Σ|Δ| 2.5 · 1 certs · `h524/elec | solid brick | (another dwelling | consv2,sec:room heaters,whw909`
- [ ] `10014073761` · L 75 / E 72.52 / Δ -2.48
### C051 · Σ|Δ| 2.5 · 1 certs · `hpcdb10328/gas | solid brick | pitched insulated | RR`
### C052 · Σ|Δ| 2.5 · 1 certs · `hpcdb10328/gas | solid brick | pitched insulated | RR`
- [ ] `100050964834` · L 60 / E 62.47 / Δ +2.47
### C052 · Σ|Δ| 2.4 · 1 certs · `h694/elec | cavity wall | (another dwelling | whw941`
### C053 · Σ|Δ| 2.4 · 1 certs · `h694/elec | cavity wall | (another dwelling | whw941`
- [ ] `100120752995` · L 71 / E 73.42 / Δ +2.42
### C053 · Σ|Δ| 2.4 · 1 certs · `hpcdb1245/gas | solid brick | pitched insulated | ext1`
### C054 · Σ|Δ| 2.4 · 1 certs · `hpcdb1245/gas | solid brick | pitched insulated | ext1`
- [ ] `100032230128` · L 55 / E 52.60 / Δ -2.40
### C054 · Σ|Δ| 2.3 · 1 certs · `hpcdb15753/gas | solid brick | pitched 150 | RR`
### C055 · Σ|Δ| 2.3 · 1 certs · `hpcdb15753/gas | solid brick | pitched 150 | RR`
- [ ] `100000034023` · L 73 / E 70.71 / Δ -2.29
### C055 · Σ|Δ| 2.2 · 1 certs · `h506/gas | cavity wall | flat limited | sec:room heaters`
### C056 · Σ|Δ| 2.2 · 1 certs · `h506/gas | cavity wall | flat limited | sec:room heaters`
- [ ] `100020377671` · L 62 / E 64.23 / Δ +2.23
### C056 · Σ|Δ| 2.2 · 1 certs · `h104/gas | solid brick | pitched insulated | RR,ext1`
### C057 · Σ|Δ| 2.2 · 1 certs · `h104/gas | solid brick | pitched insulated | RR,ext1`
- [ ] `22027335` · L 76 / E 73.77 / Δ -2.23
### C057 · Σ|Δ| 2.2 · 1 certs · `h408/elec+2mains | sandstone as | (another dwelling | sec:room heaters,whw903`
- [ ] `80838` · L 41 / E 43.19 / Δ +2.19
### C058 · Σ|Δ| 2.1 · 1 certs · `hpcdb18833/gas | solid brick | pitched insulated | RR,ext1,sec:room heaters`
- [ ] `48056153` · L 65 / E 62.89 / Δ -2.11
@ -217,15 +216,15 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
### C068 · Σ|Δ| 1.8 · 1 certs · `hpcdb17570/gas+2mains | solid brick | (another dwelling | RR,ext3,sec:room heaters`
- [ ] `100022668387` · L 68 / E 66.25 / Δ -1.75
### C069 · Σ|Δ| 1.8 · 1 certs · `hpcdb17803/gas | timber frame | pitched 100`
- [ ] `200004017091` · L 71 / E 72.75 / Δ +1.75
### C070 · Σ|Δ| 1.7 · 1 certs · `hpcdb10354/gas+2mains | sandstone as | pitched 300 | ext1`
### C069 · Σ|Δ| 1.7 · 1 certs · `hpcdb10354/gas+2mains | sandstone as | pitched 300 | ext1`
- [ ] `100100892216` · L 69 / E 67.28 / Δ -1.72
### C071 · Σ|Δ| 1.7 · 1 certs · `hpcdb8119/gas | cavity wall | pitched insulated | RR,ext1`
### C070 · Σ|Δ| 1.7 · 1 certs · `hpcdb8119/gas | cavity wall | pitched insulated | RR,ext1`
- [ ] `100060878876` · L 49 / E 50.71 / Δ +1.71
### C071 · Σ|Δ| 1.7 · 1 certs · `h402/elec | solid brick | (another dwelling | sec:portable electric,whw903`
- [ ] `12126160` · L 69 / E 70.71 / Δ +1.71
### C072 · Σ|Δ| 1.7 · 1 certs · `h401/elec | solid brick | (another dwelling | sec:portable electric,whw950`
- [ ] `22032926` · L 61 / E 62.71 / Δ +1.71
@ -286,401 +285,395 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
### C091 · Σ|Δ| 1.4 · 1 certs · `hpcdb18767/gas | sandstone as | (another dwelling`
- [ ] `250063088` · L 73 / E 71.60 / Δ -1.40
### C092 · Σ|Δ| 1.4 · 1 certs · `hpcdb18991/fuel28 | solid brick | pitched 250 | sec:room heaters`
- [ ] `100050048691` · L 58 / E 59.39 / Δ +1.39
### C093 · Σ|Δ| 1.4 · 1 certs · `hpcdb16210/gas | cavity wall | pitched 300 | sec:room heaters`
### C092 · Σ|Δ| 1.4 · 1 certs · `hpcdb16210/gas | cavity wall | pitched 300 | sec:room heaters`
- [ ] `100110097281` · L 64 / E 65.37 / Δ +1.37
### C094 · Σ|Δ| 1.4 · 1 certs · `h691/elec | solid brick | (another dwelling | whw903`
### C093 · Σ|Δ| 1.4 · 1 certs · `h691/elec | solid brick | (another dwelling | whw903`
- [ ] `10091630692` · L 58 / E 56.63 / Δ -1.37
### C095 · Σ|Δ| 1.4 · 1 certs · `hpcdb19094/gas | cavity wall | (another dwelling | ext1,sec:room heaters`
### C094 · Σ|Δ| 1.4 · 1 certs · `hpcdb19094/gas | cavity wall | (another dwelling | ext1,sec:room heaters`
- [ ] `100031433810` · L 70 / E 68.63 / Δ -1.37
### C096 · Σ|Δ| 1.3 · 1 certs · `hpcdb19227/fuel28 | solid brick | pitched 100 | RR,ext3,sec:room heaters`
### C095 · Σ|Δ| 1.3 · 1 certs · `hpcdb19227/fuel28 | solid brick | pitched 100 | RR,ext3,sec:room heaters`
- [ ] `100012368622` · L 39 / E 40.32 / Δ +1.32
### C097 · Σ|Δ| 1.3 · 1 certs · `hpcdb19007/gas | solid brick | pitched insulated | RR,ext2,sec:room heaters`
### C096 · Σ|Δ| 1.3 · 1 certs · `hpcdb19007/gas | solid brick | pitched insulated | RR,ext2,sec:room heaters`
- [ ] `90077194` · L 65 / E 63.69 / Δ -1.31
### C098 · Σ|Δ| 1.3 · 1 certs · `hpcdb19083/gas | cavity wall | pitched 75 | RR,consv2`
### C097 · Σ|Δ| 1.3 · 1 certs · `hpcdb19083/gas | cavity wall | pitched 75 | RR,consv2`
- [ ] `100031461986` · L 70 / E 71.29 / Δ +1.29
### C099 · Σ|Δ| 1.3 · 1 certs · `h691/elec | granite or | pitched insulated | PV,ext3,whw903`
### C098 · Σ|Δ| 1.3 · 1 certs · `h691/elec | granite or | pitched insulated | PV,ext3,whw903`
- [ ] `30095054` · L 46 / E 44.74 / Δ -1.26
### C100 · Σ|Δ| 1.3 · 1 certs · `hpcdb18335/gas | cavity wall | pitched 100 | RR,ext1,sec:room heaters`
### C099 · Σ|Δ| 1.3 · 1 certs · `hpcdb18335/gas | cavity wall | pitched 100 | RR,ext1,sec:room heaters`
- [ ] `100100055589` · L 58 / E 59.26 / Δ +1.26
### C101 · Σ|Δ| 1.2 · 1 certs · `h409/elec | solid brick | (another dwelling | consv2,sec:portable electric,whw909`
### C100 · Σ|Δ| 1.2 · 1 certs · `h409/elec | solid brick | (another dwelling | consv2,sec:portable electric,whw909`
- [ ] `74061136` · L 73 / E 71.75 / Δ -1.25 <- electric storage cat7 E7: over-rate = off-peak rate/fraction too generous; needs Elmhurst tariff arbitration
### C102 · Σ|Δ| 1.2 · 1 certs · `hpcdb15101/gas | cavity wall | pitched 270 | consv3,sec:room heaters`
### C101 · Σ|Δ| 1.2 · 1 certs · `hpcdb15101/gas | cavity wall | pitched 270 | consv3,sec:room heaters`
- [ ] `100091435353` · L 65 / E 66.23 / Δ +1.23
### C103 · Σ|Δ| 1.2 · 2 certs · `h301/coal-anth | system built | (another dwelling`
### C102 · Σ|Δ| 1.2 · 2 certs · `h301/coal-anth | system built | (another dwelling`
- [ ] `10091070164` · L 69 / E 69.60 / Δ +0.60
- [ ] `10090927185` · L 79 / E 79.60 / Δ +0.60
### C104 · Σ|Δ| 1.2 · 1 certs · `hpcdb19110/gas | cavity wall | pitched no | ext3`
### C103 · Σ|Δ| 1.2 · 1 certs · `hpcdb19110/gas | cavity wall | pitched no | ext3`
- [ ] `100100614412` · L 53 / E 51.81 / Δ -1.19
### C105 · Σ|Δ| 1.2 · 1 certs · `hpcdb18658/gas | solid brick | flat no`
### C104 · Σ|Δ| 1.2 · 1 certs · `hpcdb18658/gas | solid brick | flat no`
- [ ] `217091901` · L 62 / E 60.82 / Δ -1.18
### C106 · Σ|Δ| 1.2 · 1 certs · `hpcdb17115/gas | sandstone as | (another dwelling | ext2,sec:room heaters`
### C105 · Σ|Δ| 1.2 · 1 certs · `hpcdb17115/gas | sandstone as | (another dwelling | ext2,sec:room heaters`
- [x] `line768` · L 57 / E 55.84 / Δ -1.16
### C107 · Σ|Δ| 1.2 · 1 certs · `h102/gas | solid brick | (same dwelling | ext1,sec:portable electric`
### C106 · Σ|Δ| 1.2 · 1 certs · `h102/gas | solid brick | (same dwelling | ext1,sec:portable electric`
- [ ] `217061895` · L 61 / E 59.84 / Δ -1.16
### C108 · Σ|Δ| 1.1 · 1 certs · `hpcdb15708/gas | cavity wall | pitched insulated | RR,sec:room heaters`
### C107 · Σ|Δ| 1.1 · 1 certs · `hpcdb15708/gas | cavity wall | pitched insulated | RR,sec:room heaters`
- [ ] `10002349227` · L 76 / E 77.14 / Δ +1.14
### C109 · Σ|Δ| 1.1 · 1 certs · `hpcdb15451/gas | timber frame | pitched insulated | RR,ext1,sec:room heaters`
### C108 · Σ|Δ| 1.1 · 1 certs · `hpcdb15451/gas | timber frame | pitched insulated | RR,ext1,sec:room heaters`
- [ ] `200001634005` · L 66 / E 67.11 / Δ +1.11
### C110 · Σ|Δ| 1.1 · 1 certs · `hpcdb1770/fuel28 | solid brick | pitched no | ext3,sec:room heaters`
- [ ] `200004522639` · L 37 / E 35.89 / Δ -1.11
### C111 · Σ|Δ| 1.1 · 1 certs · `hpcdb16407/gas | cavity wall | pitched 250 | ext1,sec:room heaters`
### C109 · Σ|Δ| 1.1 · 1 certs · `hpcdb16407/gas | cavity wall | pitched 250 | ext1,sec:room heaters`
- [ ] `100071059081` · L 63 / E 64.09 / Δ +1.09
### C112 · Σ|Δ| 1.1 · 1 certs · `hpcdb19007/gas+2mains | cavity wall | pitched 350 | ext2,mv5,sec:room heaters,whw914`
### C110 · Σ|Δ| 1.1 · 1 certs · `hpcdb19007/gas+2mains | cavity wall | pitched 350 | ext2,mv5,sec:room heaters,whw914`
- [ ] `100011820199` · L 55 / E 56.06 / Δ +1.06
### C113 · Σ|Δ| 1.1 · 1 certs · `h691/elec | system built | (another dwelling | whw903`
### C111 · Σ|Δ| 1.1 · 1 certs · `h691/elec | system built | (another dwelling | whw903`
- [ ] `90214753` · L 83 / E 81.95 / Δ -1.05
### C114 · Σ|Δ| 1.0 · 1 certs · `h102/gas | cavity wall | pitched insulated | consv2`
### C112 · Σ|Δ| 1.0 · 1 certs · `h102/gas | cavity wall | pitched insulated | consv2`
- [ ] `100051051866` · L 70 / E 71.04 / Δ +1.04
### C115 · Σ|Δ| 1.0 · 1 certs · `hpcdb18737/gas | cavity wall | pitched insulated | PV,sec:room heaters`
### C113 · Σ|Δ| 1.0 · 1 certs · `hpcdb18737/gas | cavity wall | pitched insulated | PV,sec:room heaters`
- [ ] `10013836852` · L 100 / E 98.97 / Δ -1.03
### C116 · Σ|Δ| 1.0 · 1 certs · `hpcdb17985/gas | solid brick | (another dwelling`
### C114 · Σ|Δ| 1.0 · 1 certs · `hpcdb17985/gas | solid brick | (another dwelling`
- [ ] `line899` · L 73 / E 71.97 / Δ -1.03
### C117 · Σ|Δ| 1.0 · 1 certs · `hpcdb18524/gas+2mains | cavity wall | pitched 400+ | ext4`
### C115 · Σ|Δ| 1.0 · 1 certs · `hpcdb18524/gas+2mains | cavity wall | pitched 400+ | ext4`
- [ ] `40037847` · L 81 / E 79.98 / Δ -1.02
### C118 · Σ|Δ| 1.0 · 1 certs · `hpcdb19012/gas | cavity wall | pitched insulated`
### C116 · Σ|Δ| 1.0 · 1 certs · `hpcdb19012/gas | cavity wall | pitched insulated`
- [ ] `10070056075` · L 80 / E 78.99 / Δ -1.01
### C119 · Σ|Δ| 1.0 · 1 certs · `hpcdb16843/gas+2mains | cavity wall | pitched insulated | PV,RR,ext2`
### C117 · Σ|Δ| 1.0 · 1 certs · `hpcdb16843/gas+2mains | cavity wall | pitched insulated | PV,RR,ext2`
- [ ] `200131078` · L 86 / E 85.00 / Δ -1.00
### C120 · Σ|Δ| 1.0 · 1 certs · `hpcdb17489/gas | cavity wall | pitched 270 | PV,consv2,ext1,sec:room heaters`
### C118 · Σ|Δ| 1.0 · 1 certs · `hpcdb17489/gas | cavity wall | pitched 270 | PV,consv2,ext1,sec:room heaters`
- [ ] `10000245212` · L 101 / E 100.00 / Δ -1.00
### C121 · Σ|Δ| 1.0 · 1 certs · `h191/elec | solid brick | (another dwelling | ext2,whw909`
### C119 · Σ|Δ| 1.0 · 1 certs · `h191/elec | solid brick | (another dwelling | ext2,whw909`
- [ ] `15129162` · L 62 / E 61.00 / Δ -1.00
### C122 · Σ|Δ| 1.0 · 1 certs · `h301/coal-anth | cavity wall | pitched 270`
### C120 · Σ|Δ| 1.0 · 1 certs · `h301/coal-anth | cavity wall | pitched 270`
- [ ] `23032873` · L 73 / E 72.00 / Δ -1.00
### C123 · Σ|Δ| 1.0 · 1 certs · `hpcdb16930/gas | cavity wall | pitched unknown | RR,ext1,sec:room heaters`
### C121 · Σ|Δ| 1.0 · 1 certs · `hpcdb16930/gas | cavity wall | pitched unknown | RR,ext1,sec:room heaters`
- [ ] `45019020` · L 62 / E 61.01 / Δ -0.99
### C124 · Σ|Δ| 1.0 · 1 certs · `hpcdb17939/gas | solid brick | (another dwelling`
### C122 · Σ|Δ| 1.0 · 1 certs · `hpcdb17939/gas | solid brick | (another dwelling`
- [ ] `42065028` · L 59 / E 58.02 / Δ -0.98
### C125 · Σ|Δ| 1.0 · 1 certs · `hpcdb10071/gas | cavity wall | pitched 150 | RR`
### C123 · Σ|Δ| 1.0 · 1 certs · `hpcdb10071/gas | cavity wall | pitched 150 | RR`
- [ ] `10032928147` · L 77 / E 76.04 / Δ -0.96
### C126 · Σ|Δ| 1.0 · 1 certs · `hpcdb17045/gas | cavity wall | pitched 300`
### C124 · Σ|Δ| 1.0 · 1 certs · `hpcdb17045/gas | cavity wall | pitched 300`
- [ ] `10010678937` · L 78 / E 77.04 / Δ -0.96
### C127 · Σ|Δ| 1.0 · 1 certs · `hpcdb15247/gas | cavity wall | pitched insulated | RR`
### C125 · Σ|Δ| 1.0 · 1 certs · `hpcdb15247/gas | cavity wall | pitched insulated | RR`
- [ ] `100011010151` · L 62 / E 62.96 / Δ +0.96
### C128 · Σ|Δ| 1.0 · 1 certs · `hpcdb16406/gas | solid brick | pitched insulated | RR,consv2,ext2,sec:room heaters`
### C126 · Σ|Δ| 1.0 · 1 certs · `hpcdb16406/gas | solid brick | pitched insulated | RR,consv2,ext2,sec:room heaters`
- [ ] `100050477371` · L 65 / E 64.04 / Δ -0.96
### C129 · Σ|Δ| 0.9 · 1 certs · `hpcdb17529/fuel28 | cavity wall | pitched insulated | RR,ext2,sec:room heaters`
### C127 · Σ|Δ| 0.9 · 1 certs · `hpcdb17529/fuel28 | cavity wall | pitched insulated | RR,ext2,sec:room heaters`
- [ ] `10002945522` · L 61 / E 61.94 / Δ +0.94
### C130 · Σ|Δ| 0.9 · 1 certs · `h691/elec+2mains | cob as | pitched 300 | whw903`
### C128 · Σ|Δ| 0.9 · 1 certs · `h691/elec+2mains | cob as | pitched 300 | whw903`
- [ ] `10032957680` · L 45 / E 45.94 / Δ +0.94
### C131 · Σ|Δ| 0.9 · 1 certs · `hpcdb18204/gas | solid brick | pitched 400+ | PV,ext2`
### C129 · Σ|Δ| 0.9 · 1 certs · `hpcdb18204/gas | solid brick | pitched 400+ | PV,ext2`
- [ ] `2465057465` · L 81 / E 81.93 / Δ +0.93
### C132 · Σ|Δ| 0.9 · 1 certs · `hpcdb19019/gas | solid brick | pitched 100 | ext3,sec:room heaters`
### C130 · Σ|Δ| 0.9 · 1 certs · `hpcdb19019/gas | solid brick | pitched 100 | ext3,sec:room heaters`
- [ ] `100090616327` · L 63 / E 63.93 / Δ +0.93
### C133 · Σ|Δ| 0.9 · 1 certs · `hpcdb17612/gas | cavity wall | pitched 270 | ext1`
### C131 · Σ|Δ| 0.9 · 1 certs · `hpcdb17612/gas | cavity wall | pitched 270 | ext1`
- [ ] `100012753833` · L 74 / E 73.07 / Δ -0.93
### C134 · Σ|Δ| 0.9 · 1 certs · `hpcdb19006/gas | solid brick | pitched 75 | ext1,sec:room heaters`
### C132 · Σ|Δ| 0.9 · 1 certs · `hpcdb19006/gas | solid brick | pitched 75 | ext1,sec:room heaters`
- [ ] `100031269525` · L 53 / E 53.91 / Δ +0.91
### C135 · Σ|Δ| 0.9 · 1 certs · `hpcdb17964/gas | cavity wall | pitched insulated | consv3`
### C133 · Σ|Δ| 0.9 · 1 certs · `hpcdb17964/gas | cavity wall | pitched insulated | consv3`
- [ ] `200003725358` · L 75 / E 74.09 / Δ -0.91
### C136 · Σ|Δ| 0.9 · 1 certs · `hpcdb17507/gas | solid brick | pitched insulated | RR,ext3`
### C134 · Σ|Δ| 0.9 · 1 certs · `hpcdb17507/gas | solid brick | pitched insulated | RR,ext3`
- [ ] `100050986162` · L 62 / E 61.10 / Δ -0.90
### C137 · Σ|Δ| 0.9 · 1 certs · `hpcdb17985/gas | cavity wall | (another dwelling | mv2`
### C135 · Σ|Δ| 0.9 · 1 certs · `hpcdb17985/gas | cavity wall | (another dwelling | mv2`
- [ ] `5300000141` · L 78 / E 77.10 / Δ -0.90
### C138 · Σ|Δ| 0.9 · 1 certs · `hpcdb18616/gas | cavity wall | pitched 250 | sec:room heaters`
### C136 · Σ|Δ| 0.9 · 1 certs · `hpcdb18616/gas | cavity wall | pitched 250 | sec:room heaters`
- [ ] `100050618404` · L 73 / E 73.89 / Δ +0.89
### C139 · Σ|Δ| 0.9 · 1 certs · `hpcdb17507/gas | cavity wall | pitched 250 | PV,ext1`
### C137 · Σ|Δ| 0.9 · 1 certs · `hpcdb17507/gas | cavity wall | pitched 250 | PV,ext1`
- [ ] `100090476016` · L 81 / E 81.89 / Δ +0.89
### C140 · Σ|Δ| 0.9 · 1 certs · `h691/elec | timber frame | pitched 200 | RR,ext3,whw903`
### C138 · Σ|Δ| 0.9 · 1 certs · `h691/elec | timber frame | pitched 200 | RR,ext3,whw903`
- [ ] `10012119141` · L 45 / E 45.89 / Δ +0.89
### C141 · Σ|Δ| 0.9 · 1 certs · `h524/elec | cavity wall | pitched 300 | PV`
### C139 · Σ|Δ| 0.9 · 1 certs · `h524/elec | cavity wall | pitched 300 | PV`
- [ ] `100040938206` · L 75 / E 75.89 / Δ +0.89
### C142 · Σ|Δ| 0.9 · 1 certs · `hpcdb18234/gas | cavity wall | pitched insulated | RR,consv2`
### C140 · Σ|Δ| 0.9 · 1 certs · `hpcdb18234/gas | cavity wall | pitched insulated | RR,consv2`
- [ ] `38188474` · L 76 / E 76.87 / Δ +0.87
### C143 · Σ|Δ| 0.9 · 1 certs · `hpcdb16777/gas | cavity wall | pitched 100 | ext1,sec:room heaters`
### C141 · Σ|Δ| 0.9 · 1 certs · `hpcdb16777/gas | cavity wall | pitched 100 | ext1,sec:room heaters`
- [ ] `100061194957` · L 69 / E 69.87 / Δ +0.87
### C144 · Σ|Δ| 0.9 · 1 certs · `hpcdb18559/gas+2mains | solid brick | pitched 200 | whw914`
### C142 · Σ|Δ| 0.9 · 1 certs · `hpcdb18559/gas+2mains | solid brick | pitched 200 | whw914`
- [ ] `100021236527` · L 72 / E 71.13 / Δ -0.87
### C145 · Σ|Δ| 0.9 · 1 certs · `hpcdb18907/gas | cavity wall | pitched 270 | consv2`
### C143 · Σ|Δ| 0.9 · 1 certs · `hpcdb18907/gas | cavity wall | pitched 270 | consv2`
- [ ] `100040193752` · L 71 / E 71.86 / Δ +0.86
### C146 · Σ|Δ| 0.9 · 1 certs · `hpcdb10327/gas | cavity wall | (another dwelling`
### C144 · Σ|Δ| 0.9 · 1 certs · `hpcdb10327/gas | cavity wall | (another dwelling`
- [ ] `100060701552` · L 74 / E 74.86 / Δ +0.86
### C147 · Σ|Δ| 0.9 · 1 certs · `h691/elec | system built | flat insulated | whw903`
### C145 · Σ|Δ| 0.9 · 1 certs · `h691/elec | system built | flat insulated | whw903`
- [ ] `10070396146` · L 61 / E 60.14 / Δ -0.86
### C148 · Σ|Δ| 0.8 · 1 certs · `hpcdb8587/gas | cavity wall | (another dwelling`
### C146 · Σ|Δ| 0.8 · 1 certs · `hpcdb8587/gas | cavity wall | (another dwelling`
- [ ] `100030528930` · L 74 / E 73.16 / Δ -0.84
### C149 · Σ|Δ| 0.8 · 1 certs · `hpcdb18212/gas | solid brick | (another dwelling`
### C147 · Σ|Δ| 0.8 · 1 certs · `hpcdb18212/gas | solid brick | (another dwelling`
- [ ] `100020982570` · L 72 / E 71.17 / Δ -0.83
### C150 · Σ|Δ| 0.8 · 1 certs · `hpcdb16888/gas | cavity wall | pitched 350 | consv2`
### C148 · Σ|Δ| 0.8 · 1 certs · `hpcdb16888/gas | cavity wall | pitched 350 | consv2`
- [ ] `394024487` · L 75 / E 74.17 / Δ -0.83
### C151 · Σ|Δ| 0.8 · 1 certs · `hpcdb17503/gas | solid brick | pitched insulated | RR,ext1,mv4`
### C149 · Σ|Δ| 0.8 · 1 certs · `hpcdb17503/gas | solid brick | pitched insulated | RR,ext1,mv4`
- [ ] `217070698` · L 78 / E 78.83 / Δ +0.83
### C152 · Σ|Δ| 0.8 · 1 certs · `hpcdb15709/gas | cavity wall | (another dwelling | ext1`
### C150 · Σ|Δ| 0.8 · 1 certs · `hpcdb15709/gas | cavity wall | (another dwelling | ext1`
- [ ] `77022508` · L 69 / E 68.18 / Δ -0.82
### C153 · Σ|Δ| 0.8 · 1 certs · `hpcdb18496/gas | cavity wall | pitched 250 | RR,consv4`
### C151 · Σ|Δ| 0.8 · 1 certs · `hpcdb18496/gas | cavity wall | pitched 250 | RR,consv4`
- [ ] `100040259104` · L 68 / E 68.82 / Δ +0.82
### C154 · Σ|Δ| 0.8 · 1 certs · `hpcdb18559/gas | solid brick | pitched 270 | ext1`
### C152 · Σ|Δ| 0.8 · 1 certs · `hpcdb18559/gas | solid brick | pitched 270 | ext1`
- [ ] `100031399026` · L 70 / E 70.81 / Δ +0.81
### C155 · Σ|Δ| 0.8 · 1 certs · `hpcdb16374/gas | cavity wall | pitched unknown`
### C153 · Σ|Δ| 0.8 · 1 certs · `hpcdb16374/gas | cavity wall | pitched unknown`
- [ ] `10009645698` · L 67 / E 67.81 / Δ +0.81
### C156 · Σ|Δ| 0.8 · 1 certs · `hpcdb16395/gas | timber frame | thatched with | ext1,sec:room heaters`
### C154 · Σ|Δ| 0.8 · 1 certs · `hpcdb16395/gas | timber frame | thatched with | ext1,sec:room heaters`
- [ ] `100080818887` · L 56 / E 55.19 / Δ -0.81
### C157 · Σ|Δ| 0.8 · 1 certs · `hpcdb16835/gas | solid brick | pitched insulated | RR,ext1`
### C155 · Σ|Δ| 0.8 · 1 certs · `hpcdb16835/gas | solid brick | pitched insulated | RR,ext1`
- [ ] `100012374381` · L 69 / E 69.80 / Δ +0.80
### C158 · Σ|Δ| 0.8 · 1 certs · `hpcdb17560/gas | cavity wall | pitched 250 | ext2`
### C156 · Σ|Δ| 0.8 · 1 certs · `hpcdb17560/gas | cavity wall | pitched 250 | ext2`
- [ ] `100012350270` · L 78 / E 77.20 / Δ -0.80
### C159 · Σ|Δ| 0.8 · 1 certs · `hpcdb15166/gas+2mains | sandstone as | pitched no | PV,ext4,sec:room heaters,whw914`
### C157 · Σ|Δ| 0.8 · 1 certs · `hpcdb15166/gas+2mains | sandstone as | pitched no | PV,ext4,sec:room heaters,whw914`
- [ ] `100051109723` · L 60 / E 60.78 / Δ +0.78
### C160 · Σ|Δ| 0.8 · 1 certs · `hpcdb18911/gas | cavity wall | pitched 50 | consv4`
### C158 · Σ|Δ| 0.8 · 1 certs · `hpcdb18911/gas | cavity wall | pitched 50 | consv4`
- [ ] `100061616915` · L 63 / E 62.22 / Δ -0.78
### C161 · Σ|Δ| 0.8 · 1 certs · `h691/elec | cavity wall | pitched 200 | whw903`
### C159 · Σ|Δ| 0.8 · 1 certs · `h691/elec | cavity wall | pitched 200 | whw903`
- [ ] `line71` · L 74 / E 74.77 / Δ +0.77
### C162 · Σ|Δ| 0.8 · 1 certs · `hpcdb17986/gas | cavity wall | (another dwelling`
### C160 · Σ|Δ| 0.8 · 1 certs · `hpcdb17986/gas | cavity wall | (another dwelling`
- [ ] `100011603934` · L 72 / E 71.23 / Δ -0.77
### C163 · Σ|Δ| 0.8 · 1 certs · `hpcdb10244/gas | cavity wall | pitched 100`
### C161 · Σ|Δ| 0.8 · 1 certs · `hpcdb10244/gas | cavity wall | pitched 100`
- [ ] `24030987` · L 73 / E 73.76 / Δ +0.76
### C164 · Σ|Δ| 0.8 · 1 certs · `h193/elec | solid brick | (another dwelling | whw909`
### C162 · Σ|Δ| 0.8 · 1 certs · `h193/elec | solid brick | (another dwelling | whw909`
- [ ] `100032043038` · L 74 / E 73.24 / Δ -0.76
### C165 · Σ|Δ| 0.8 · 1 certs · `hpcdb17513/gas | cavity wall | pitched unknown`
### C163 · Σ|Δ| 0.8 · 1 certs · `hpcdb17513/gas | cavity wall | pitched unknown`
- [ ] `100010866608` · L 71 / E 70.24 / Δ -0.76
### C166 · Σ|Δ| 0.7 · 1 certs · `hpcdb17965/gas | cavity wall | pitched insulated | RR,ext1,sec:room heaters`
### C164 · Σ|Δ| 0.7 · 1 certs · `hpcdb17965/gas | cavity wall | pitched insulated | RR,ext1,sec:room heaters`
- [ ] `100090399615` · L 67 / E 67.75 / Δ +0.75
### C167 · Σ|Δ| 0.7 · 1 certs · `h691/elec | solid brick | roof room(s) | RR,ext2,sec:room heaters,whw903`
### C165 · Σ|Δ| 0.7 · 1 certs · `h691/elec | solid brick | roof room(s) | RR,ext2,sec:room heaters,whw903`
- [ ] `100062174575` · L 46 / E 46.75 / Δ +0.75
### C168 · Σ|Δ| 0.7 · 1 certs · `hpcdb16137/gas | solid brick | pitched 150`
### C166 · Σ|Δ| 0.7 · 1 certs · `hpcdb16137/gas | solid brick | pitched 150`
- [ ] `200004296092` · L 71 / E 71.74 / Δ +0.74
### C169 · Σ|Δ| 0.7 · 1 certs · `hpcdb17576/gas | cavity wall | pitched insulated | RR,consv2`
### C167 · Σ|Δ| 0.7 · 1 certs · `hpcdb17576/gas | cavity wall | pitched insulated | RR,consv2`
- [ ] `10012341135` · L 79 / E 79.73 / Δ +0.73
### C170 · Σ|Δ| 0.7 · 1 certs · `h409/elec | cavity wall | (another dwelling | sec:portable electric,whw903`
### C168 · Σ|Δ| 0.7 · 1 certs · `h409/elec | cavity wall | (another dwelling | sec:portable electric,whw903`
- [ ] `100091005853` · L 70 / E 69.27 / Δ -0.73
### C171 · Σ|Δ| 0.7 · 1 certs · `hpcdb18908/gas | cavity wall | pitched 175`
### C169 · Σ|Δ| 0.7 · 1 certs · `hpcdb18908/gas | cavity wall | pitched 175`
- [ ] `100021533514` · L 71 / E 71.73 / Δ +0.73
### C172 · Σ|Δ| 0.7 · 1 certs · `h301/coal-anth | solid brick | (another dwelling`
### C170 · Σ|Δ| 0.7 · 1 certs · `h301/coal-anth | solid brick | (another dwelling`
- [ ] `5062075` · L 69 / E 69.72 / Δ +0.72
### C173 · Σ|Δ| 0.7 · 1 certs · `hpcdb18112/gas | cavity wall | pitched 100 | RR,ext1`
### C171 · Σ|Δ| 0.7 · 1 certs · `hpcdb18112/gas | cavity wall | pitched 100 | RR,ext1`
- [ ] `100040813308` · L 62 / E 62.72 / Δ +0.72
### C174 · Σ|Δ| 0.7 · 1 certs · `h104/gas | solid brick | pitched unknown | ext2`
### C172 · Σ|Δ| 0.7 · 1 certs · `h104/gas | solid brick | pitched unknown | ext2`
- [ ] `38105600` · L 68 / E 67.28 / Δ -0.72
### C175 · Σ|Δ| 0.7 · 1 certs · `h104/gas | solid brick | pitched 200`
### C173 · Σ|Δ| 0.7 · 1 certs · `h104/gas | solid brick | pitched 200`
- [ ] `line255` · L 72 / E 71.29 / Δ -0.71
### C176 · Σ|Δ| 0.7 · 1 certs · `h304/elec | cavity wall | (another dwelling | whw950`
### C174 · Σ|Δ| 0.7 · 1 certs · `h304/elec | cavity wall | (another dwelling | whw950`
- [ ] `5300047580` · L 69 / E 68.30 / Δ -0.70
### C177 · Σ|Δ| 0.7 · 1 certs · `h104/gas | cavity wall | pitched 250 | ext1`
### C175 · Σ|Δ| 0.7 · 1 certs · `h104/gas | cavity wall | pitched 250 | ext1`
- [ ] `100110433403` · L 69 / E 68.32 / Δ -0.68
### C178 · Σ|Δ| 0.7 · 1 certs · `hpcdb16835/gas | cavity wall | pitched insulated`
### C176 · Σ|Δ| 0.7 · 1 certs · `hpcdb16835/gas | cavity wall | pitched insulated`
- [ ] `10093416558` · L 79 / E 78.32 / Δ -0.68
### C179 · Σ|Δ| 0.7 · 1 certs · `hpcdb18251/gas | solid brick | pitched 100`
### C177 · Σ|Δ| 0.7 · 1 certs · `hpcdb18251/gas | solid brick | pitched 100`
- [ ] `100050958217` · L 68 / E 68.68 / Δ +0.68
### C180 · Σ|Δ| 0.7 · 1 certs · `hpcdb18224/gas | solid brick | pitched 225 | ext1`
### C178 · Σ|Δ| 0.7 · 1 certs · `hpcdb18224/gas | solid brick | pitched 225 | ext1`
- [ ] `100022667797` · L 68 / E 67.32 / Δ -0.68
### C181 · Σ|Δ| 0.7 · 1 certs · `hpcdb10243/gas | cavity wall | pitched insulated | RR,sec:room heaters`
### C179 · Σ|Δ| 0.7 · 1 certs · `hpcdb10243/gas | cavity wall | pitched insulated | RR,sec:room heaters`
- [ ] `100030528925` · L 78 / E 78.65 / Δ +0.65
### C182 · Σ|Δ| 0.6 · 1 certs · `hpcdb17657/gas | cavity wall | (another dwelling`
### C180 · Σ|Δ| 0.6 · 1 certs · `hpcdb17657/gas | cavity wall | (another dwelling`
- [ ] `100110300037` · L 74 / E 73.35 / Δ -0.65
### C183 · Σ|Δ| 0.6 · 1 certs · `hpcdb2044/gas | solid brick | (another dwelling | ext1`
### C181 · Σ|Δ| 0.6 · 1 certs · `hpcdb2044/gas | solid brick | (another dwelling | ext1`
- [ ] `217092450` · L 52 / E 52.64 / Δ +0.64
### C184 · Σ|Δ| 0.6 · 1 certs · `hpcdb15101/gas | solid brick | pitched 300`
### C182 · Σ|Δ| 0.6 · 1 certs · `hpcdb15101/gas | solid brick | pitched 300`
- [ ] `100061164545` · L 72 / E 71.36 / Δ -0.64
### C185 · Σ|Δ| 0.6 · 1 certs · `hpcdb10328/gas | cavity wall | pitched unknown`
### C183 · Σ|Δ| 0.6 · 1 certs · `hpcdb10328/gas | cavity wall | pitched unknown`
- [ ] `100051075936` · L 71 / E 70.36 / Δ -0.64
### C186 · Σ|Δ| 0.6 · 1 certs · `hpcdb17507/gas | cavity wall | roof room(s) | RR,sec:room heaters`
### C184 · Σ|Δ| 0.6 · 1 certs · `hpcdb17507/gas | cavity wall | roof room(s) | RR,sec:room heaters`
- [ ] `100011565830` · L 72 / E 72.64 / Δ +0.64
### C187 · Σ|Δ| 0.6 · 1 certs · `hpcdb15700/gas | sandstone with | pitched 100 | RR,sec:room heaters`
### C185 · Σ|Δ| 0.6 · 1 certs · `hpcdb15700/gas | sandstone with | pitched 100 | RR,sec:room heaters`
- [ ] `61010956` · L 75 / E 74.37 / Δ -0.63
### C188 · Σ|Δ| 0.6 · 1 certs · `hpcdb17115/gas+2mains | cavity wall | pitched insulated | RR,ext4,sec:room heaters`
### C186 · Σ|Δ| 0.6 · 1 certs · `hpcdb17115/gas+2mains | cavity wall | pitched insulated | RR,ext4,sec:room heaters`
- [ ] `100110752514` · L 67 / E 67.62 / Δ +0.62
### C189 · Σ|Δ| 0.6 · 1 certs · `h404/elec | cavity wall | pitched 175 | sec:room heaters,whw909`
### C187 · Σ|Δ| 0.6 · 1 certs · `h404/elec | cavity wall | pitched 175 | sec:room heaters,whw909`
- [ ] `100070295212` · L 75 / E 74.38 / Δ -0.62
### C190 · Σ|Δ| 0.6 · 1 certs · `hpcdb18766/gas+2mains | sandstone as | pitched 100 | RR`
### C188 · Σ|Δ| 0.6 · 1 certs · `hpcdb18766/gas+2mains | sandstone as | pitched 100 | RR`
- [ ] `100012534027` · L 65 / E 64.38 / Δ -0.62
### C191 · Σ|Δ| 0.6 · 1 certs · `hpcdb9058/fuel28 | solid brick | pitched 100 | RR,ext2,sec:room heaters`
### C189 · Σ|Δ| 0.6 · 1 certs · `hpcdb9058/fuel28 | solid brick | pitched 100 | RR,ext2,sec:room heaters`
- [x] `10009812472` · L 40 / E 39.40 / Δ -0.60
### C192 · Σ|Δ| 0.6 · 1 certs · `hpcdb18218/gas | solid brick | (another dwelling`
### C190 · Σ|Δ| 0.6 · 1 certs · `hpcdb18218/gas | solid brick | (another dwelling`
- [ ] `34080035` · L 77 / E 76.41 / Δ -0.59
### C193 · Σ|Δ| 0.6 · 1 certs · `hpcdb16137/gas | cavity wall | pitched 150 | RR,ext1`
### C191 · Σ|Δ| 0.6 · 1 certs · `hpcdb16137/gas | cavity wall | pitched 150 | RR,ext1`
- [ ] `21032732` · L 69 / E 69.59 / Δ +0.59
### C194 · Σ|Δ| 0.6 · 1 certs · `h101/gas | cavity wall | pitched 100 | RR,ext1`
### C192 · Σ|Δ| 0.6 · 1 certs · `h101/gas | cavity wall | pitched 100 | RR,ext1`
- [ ] `100060562056` · L 66 / E 65.41 / Δ -0.59
### C195 · Σ|Δ| 0.6 · 1 certs · `hpcdb17514/fuel27 | cavity wall | pitched 400+ | PV,ext2`
### C193 · Σ|Δ| 0.6 · 1 certs · `hpcdb17514/fuel27 | cavity wall | pitched 400+ | PV,ext2`
- [ ] `100091086558` · L 79 / E 79.58 / Δ +0.58
### C196 · Σ|Δ| 0.6 · 1 certs · `hpcdb18908/gas | solid brick | (another dwelling`
### C194 · Σ|Δ| 0.6 · 1 certs · `hpcdb18908/gas | solid brick | (another dwelling`
- [ ] `line599` · L 74 / E 73.42 / Δ -0.58
### C197 · Σ|Δ| 0.6 · 1 certs · `hpcdb17973/gas | cavity wall | pitched insulated`
### C195 · Σ|Δ| 0.6 · 1 certs · `hpcdb17973/gas | cavity wall | pitched insulated`
- [ ] `100020407741` · L 72 / E 71.42 / Δ -0.58
### C198 · Σ|Δ| 0.6 · 1 certs · `hpcdb19007/gas | cavity wall | pitched 200 | consv2,ext1,sec:room heaters`
### C196 · Σ|Δ| 0.6 · 1 certs · `hpcdb19007/gas | cavity wall | pitched 200 | consv2,ext1,sec:room heaters`
- [ ] `100050839457` · L 70 / E 70.57 / Δ +0.57
### C199 · Σ|Δ| 0.6 · 1 certs · `hpcdb19007/gas | solid brick | pitched insulated | RR,sec:room heaters`
### C197 · Σ|Δ| 0.6 · 1 certs · `hpcdb19007/gas | solid brick | pitched insulated | RR,sec:room heaters`
- [ ] `42105250` · L 59 / E 59.57 / Δ +0.57
### C200 · Σ|Δ| 0.6 · 1 certs · `hpcdb1917/gas | timber frame | pitched insulated`
### C198 · Σ|Δ| 0.6 · 1 certs · `hpcdb1917/gas | timber frame | pitched insulated`
- [ ] `77200509` · L 69 / E 69.57 / Δ +0.57
### C201 · Σ|Δ| 0.6 · 1 certs · `hpcdb10356/gas | cavity wall | pitched insulated | ext2`
### C199 · Σ|Δ| 0.6 · 1 certs · `hpcdb10356/gas | cavity wall | pitched insulated | ext2`
- [ ] `200040534` · L 65 / E 65.56 / Δ +0.56
### C202 · Σ|Δ| 0.6 · 1 certs · `hpcdb17507/gas | solid brick | pitched 150 | ext1,mv2`
### C200 · Σ|Δ| 0.6 · 1 certs · `hpcdb17507/gas | solid brick | pitched 150 | ext1,mv2`
- [ ] `200049463` · L 69 / E 69.56 / Δ +0.56
### C203 · Σ|Δ| 0.6 · 1 certs · `h126/fuel28+2mains | cavity wall | pitched 300 | RR,consv2,ext3,sec:room heaters`
### C201 · Σ|Δ| 0.6 · 1 certs · `h126/fuel28+2mains | cavity wall | pitched 300 | RR,consv2,ext3,sec:room heaters`
- [ ] `100062527568` · L 61 / E 61.56 / Δ +0.56
### C204 · Σ|Δ| 0.6 · 1 certs · `hpcdb15700/gas | cavity wall | pitched limited | RR,ext1`
### C202 · Σ|Δ| 0.6 · 1 certs · `hpcdb15700/gas | cavity wall | pitched limited | RR,ext1`
- [ ] `100100268900` · L 69 / E 69.56 / Δ +0.56
### C205 · Σ|Δ| 0.6 · 1 certs · `hpcdb17004/fuel27+2mains | sandstone as | pitched no | ext3,sec:room heaters`
### C203 · Σ|Δ| 0.6 · 1 certs · `hpcdb17004/fuel27+2mains | sandstone as | pitched no | ext3,sec:room heaters`
- [x] `200003110548` · L 29 / E 28.45 / Δ -0.55
### C206 · Σ|Δ| 0.5 · 1 certs · `hpcdb9464/gas | cavity wall | pitched 150 | ext1`
### C204 · Σ|Δ| 0.5 · 1 certs · `hpcdb9464/gas | cavity wall | pitched 150 | ext1`
- [ ] `90036914` · L 60 / E 60.55 / Δ +0.55
### C207 · Σ|Δ| 0.5 · 1 certs · `h409/elec | cavity wall | pitched 250 | mv5,sec:room heaters,whw903`
### C205 · Σ|Δ| 0.5 · 1 certs · `h409/elec | cavity wall | pitched 250 | mv5,sec:room heaters,whw903`
- [ ] `10004742671` · L 70 / E 69.46 / Δ -0.54
### C208 · Σ|Δ| 0.5 · 1 certs · `hpcdb18251/gas | cavity wall | roof room(s) | RR`
### C206 · Σ|Δ| 0.5 · 1 certs · `hpcdb18251/gas | cavity wall | roof room(s) | RR`
- [ ] `100010657450` · L 75 / E 75.54 / Δ +0.54
### C209 · Σ|Δ| 0.5 · 1 certs · `hpcdb17507/gas | cavity wall | pitched 150 | ext1`
### C207 · Σ|Δ| 0.5 · 1 certs · `hpcdb17507/gas | cavity wall | pitched 150 | ext1`
- [ ] `100061834344` · L 71 / E 70.46 / Δ -0.54
### C210 · Σ|Δ| 0.5 · 1 certs · `h113/gas | cavity wall | pitched 200`
### C208 · Σ|Δ| 0.5 · 1 certs · `h113/gas | cavity wall | pitched 200`
- [ ] `4510097194` · L 70 / E 70.53 / Δ +0.53
### C211 · Σ|Δ| 0.5 · 1 certs · `hpcdb18907/gas | cavity wall | pitched 125 | ext1`
### C209 · Σ|Δ| 0.5 · 1 certs · `hpcdb18907/gas | cavity wall | pitched 125 | ext1`
- [ ] `100010913220` · L 72 / E 72.53 / Δ +0.53
### C212 · Σ|Δ| 0.5 · 1 certs · `hpcdb18242/gas | sandstone as | pitched 150 | ext2,sec:room heaters`
### C210 · Σ|Δ| 0.5 · 1 certs · `hpcdb18242/gas | sandstone as | pitched 150 | ext2,sec:room heaters`
- [ ] `43074051` · L 63 / E 62.48 / Δ -0.52
### C213 · Σ|Δ| 0.5 · 1 certs · `h104/gas | cavity wall | pitched 300`
### C211 · Σ|Δ| 0.5 · 1 certs · `h104/gas | cavity wall | pitched 300`
- [ ] `100010723814` · L 69 / E 69.52 / Δ +0.52
### C214 · Σ|Δ| 0.5 · 1 certs · `hpcdb16137/gas | cavity wall | (another dwelling`
### C212 · Σ|Δ| 0.5 · 1 certs · `hpcdb16137/gas | cavity wall | (another dwelling`
- [ ] `100020955792` · L 77 / E 77.52 / Δ +0.52
### C215 · Σ|Δ| 0.5 · 1 certs · `hpcdb19079/gas | cavity wall | pitched 200 | ext1,sec:room heaters`
### C213 · Σ|Δ| 0.5 · 1 certs · `hpcdb19079/gas | cavity wall | pitched 200 | ext1,sec:room heaters`
- [ ] `77172223` · L 65 / E 65.52 / Δ +0.52
### C216 · Σ|Δ| 0.5 · 1 certs · `hpcdb10242/gas | granite or | pitched insulated | RR,sec:room heaters`
### C214 · Σ|Δ| 0.5 · 1 certs · `hpcdb10242/gas | granite or | pitched insulated | RR,sec:room heaters`
- [ ] `100051245439` · L 62 / E 61.48 / Δ -0.52
### C217 · Σ|Δ| 0.5 · 1 certs · `hpcdb10328/gas | cavity wall | (another dwelling`
### C215 · Σ|Δ| 0.5 · 1 certs · `hpcdb10328/gas | cavity wall | (another dwelling`
- [ ] `100012553958` · L 67 / E 66.48 / Δ -0.52
### C218 · Σ|Δ| 0.5 · 1 certs · `hpcdb10033/gas | cavity wall | pitched 200 | ext2,sec:room heaters`
### C216 · Σ|Δ| 0.5 · 1 certs · `hpcdb10033/gas | cavity wall | pitched 200 | ext2,sec:room heaters`
- [ ] `100110108632` · L 63 / E 63.51 / Δ +0.51
### C219 · Σ|Δ| 0.5 · 1 certs · `h109/gas | cavity wall | pitched 270 | consv2,ext1,sec:room heaters`
### C217 · Σ|Δ| 0.5 · 1 certs · `h109/gas | cavity wall | pitched 270 | consv2,ext1,sec:room heaters`
- [ ] `100091102581` · L 65 / E 65.51 / Δ +0.51
### C220 · Σ|Δ| 0.5 · 1 certs · `hpcdb19008/gas | cavity wall | pitched 150 | ext1,sec:room heaters`
### C218 · Σ|Δ| 0.5 · 1 certs · `hpcdb19008/gas | cavity wall | pitched 150 | ext1,sec:room heaters`
- [ ] `10002326688` · L 69 / E 68.50 / Δ -0.50
### C221 · Σ|Δ| 0.5 · 1 certs · `h129/fuel28 | granite or | pitched 200 | ext2,sec:room heaters`
### C219 · Σ|Δ| 0.5 · 1 certs · `h129/fuel28 | granite or | pitched 200 | ext2,sec:room heaters`
- [ ] `10023132869` · L 46 / E 45.50 / Δ -0.50
### C222 · Σ|Δ| 0.5 · 1 certs · `hpcdb9007/fuel28 | sandstone as | pitched insulated | RR,ext4,sec:room heaters`
### C220 · Σ|Δ| 0.5 · 1 certs · `hpcdb9007/fuel28 | sandstone as | pitched insulated | RR,ext4,sec:room heaters`
- [ ] `10091707271` · L 41 / E 41.50 / Δ +0.50
## Resolved ≤0.5 (770 certs — no action)
## Resolved ≤0.5 (773 certs — no action)
<details><summary>expand</summary>
@ -841,6 +834,7 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
- [x] `74041417` · L 79 / E 79.39 / Δ +0.39 · `hpcdb17507/gas | cavity wall | pitched 300 | PV`
- [x] `100110452552` · L 67 / E 67.39 / Δ +0.39 · `hpcdb15068/gas | cavity wall | pitched 175 | mv2,sec:room heaters`
- [x] `100022607800` · L 73 / E 72.61 / Δ -0.39 · `hpcdb18119/gas | solid brick | pitched 270`
- [x] `200004017091` · L 71 / E 71.39 / Δ +0.39 · `hpcdb17803/gas | timber frame | pitched 100`
- [x] `100022277442` · L 58 / E 58.39 / Δ +0.39 · `h409/elec | cavity wall | pitched insulated | whw903`
- [x] `250029611` · L 73 / E 72.61 / Δ -0.39 · `hpcdb17553/gas | cavity wall | pitched 250 | consv2,ext1`
- [x] `100022887979` · L 72 / E 72.39 / Δ +0.39 · `hpcdb18861/gas | solid brick | (another dwelling`
@ -1185,6 +1179,7 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
- [x] `100010043608` · L 56 / E 56.16 / Δ +0.16 · `h401/elec | cavity wall | pitched 200 | PV,RR,consv2,ext1,sec:room heaters,whw903`
- [x] `100022232588` · L 56 / E 56.16 / Δ +0.16 · `h102/gas | solid brick | pitched 25 | ext1`
- [x] `100110450961` · L 69 / E 68.84 / Δ -0.16 · `h104/gas | sandstone as | pitched 250 | ext1`
- [x] `11071248` · L 78 / E 77.84 / Δ -0.16 · `h402/elec | solid brick | (another dwelling | sec:portable electric,whw903`
- [x] `10014540481` · L 81 / E 81.15 / Δ +0.15 · `hpcdb16400/gas | timber frame | roof room(s) | RR`
- [x] `100061860491` · L 69 / E 68.85 / Δ -0.15 · `hpcdb18824/gas | cavity wall | pitched 250 | consv3`
- [x] `100121065133` · L 81 / E 80.85 / Δ -0.15 · `hpcdb17511/gas | cavity wall | (another dwelling`
@ -1248,6 +1243,7 @@ Statuses: `[ ]` todo · `[x]` resolved ≤0.5 · 🔧 fix landed · ⚠ xfail en
- [x] `202028377` · L 66 / E 66.13 / Δ +0.13 · `hpcdb17548/gas | solid brick | pitched 75`
- [x] `100090533643` · L 85 / E 85.13 / Δ +0.13 · `hpcdb17507/gas | cavity wall | pitched insulated | PV,ext1`
- [x] `100090335261` · L 70 / E 70.13 / Δ +0.13 · `hpcdb17974/gas | cavity wall | (another dwelling`
- [x] `100050048691` · L 58 / E 57.87 / Δ -0.13 · `hpcdb18991/fuel28 | solid brick | pitched 250 | sec:room heaters`
- [x] `100061898123` · L 70 / E 70.13 / Δ +0.13 · `hpcdb17511/gas | solid brick | pitched 100`
- [x] `38149813` · L 74 / E 73.87 / Δ -0.13 · `h104/gas | solid brick | pitched 350 | ext1`
- [x] `10014619006` · L 77 / E 77.13 / Δ +0.13 · `hpcdb17045/gas | cavity wall | pitched 350 | mv2`

24
tests/domain/sap10_calculator/rdsap/test_cert_to_inputs.py
View file

@ -738,6 +738,30 @@ def test_cylinder_present_but_size_not_determined_defaults_to_normal_110l() -> N
assert volume_l is not None and abs(volume_l - 110.0) <= 1e-9
def test_cylinder_size_not_determined_still_incurs_storage_loss() -> None:
# Arrange — the size-0 (not determined) cylinder's Table 28 default of
# 110 L must flow into the STORAGE-LOSS override too, not just the Table
# 13 high-rate fraction. `_cylinder_storage_loss_override` read the
# volume via `_cylinder_volume_l_from_code` (None for size 0) and bailed
# `if volume_l is None: return None`, dropping the loss entirely — while
# the rest of the DHW cascade used `_hot_water_cylinder_volume_l`
# (110 L). A present cylinder with no storage loss under-costs the DHW
# and over-rates the dwelling (7 corpus certs lodge cylinder_size=0 +
# has_cylinder=true). RdSAP 10 §10.5 Table 28: a present-but-unsized
# cylinder is a 110 L cylinder and incurs the Table 2 storage loss.
from domain.sap10_calculator.rdsap.cert_to_inputs import (
_cylinder_storage_loss_override, # pyright: ignore[reportPrivateUsage]
)
epc = _cylinder_epc(cylinder_size=0)
# Act
storage_56m = _cylinder_storage_loss_override(epc, None)
# Assert — a real 110 L cylinder loss series, not the dropped None.
assert storage_56m is not None
assert sum(storage_56m) > 0.0
def test_cylinder_size_inaccessible_code_5_solid_fuel_boiler_uses_160l() -> None:
# Arrange — RdSAP 10 §10.5 Table 28: an "Inaccessible" cylinder (code 5)
# heated "from a solid fuel boiler" uses 160 litres.

15
tests/domain/sap10_calculator/test_real_cert_sap_accuracy.py
View file

@ -790,6 +790,21 @@ _EXPECTATIONS: Final[tuple[RealCertExpectation, ...]] = (
cert_num="uprn-200004296092",
sap_score=72,
),
# UPRN 200004017091 (corpus; no cert number lodged). RdSAP-21.0.1 native —
# END-TERRACE HOUSE, mains-gas boiler, hot-water cylinder lodged with
# `cylinder_size=0` (present but "size not determined") + has_cylinder=true.
# The unsized-cylinder storage-loss cert: `_cylinder_storage_loss_override`
# read the volume via `_cylinder_volume_l_from_code` → None for size 0 →
# bailed and DROPPED the cylinder's Table-2 storage loss, under-costing the
# DHW → engine 72.75 (Δ +1.75 vs lodged 71). RdSAP 10 §10.5 Table 28: an
# unsized present cylinder is the 110 L "Normal" default and still incurs
# the loss → engine 71.39 = lodged 71. PINNED to the observed engine 71.
RealCertExpectation(
schema="RdSAP-Schema-21.0.1",
sample="uprn_200004017091",
cert_num="uprn-200004017091",
sap_score=71,
),
)

15
tests/infrastructure/epc_client/test_sap_accuracy_corpus.py
View file

@ -218,7 +218,16 @@ _CORPUS = Path(
# lodged 36 / engine 20.8 -> 35.9. 55 corpus certs carry a colliding
# secondary. Unit-pinned in test_cert_to_inputs (fuel_cost cost path, not
# just the display helper the prior enum-9 test guarded).
_MIN_WITHIN_HALF_SAP = 0.770
# 0.770 -> 0.773 via the unsized-cylinder storage-loss fix: a present
# cylinder lodging gov-API cylinder_size=0 ("size not determined") resolved
# to None volume in `_cylinder_storage_loss_override`, so `if volume_l is
# None: return None` DROPPED its storage loss (under-costing the DHW ->
# over-rate). RdSAP 10 §10.5 Table 28: an unsized present cylinder is the
# 110 L "Normal" default and still incurs the Table-2 loss (the value the
# Table-13 fraction path already used). Gated on the explicit 0 so a
# full-SAP unlodged size (None) keeps its own handling. 7 corpus certs;
# within 77.0% -> 77.3%, PE 3.2 -> 3.05, CO2 0.074 -> 0.073.
_MIN_WITHIN_HALF_SAP = 0.773
# 0.793 -> 0.789 via the §12 Unknown-meter + dual-electric-immersion off-peak
# trigger (RdSAP 10 PDF p.62): Apartment 241 (main 691 + 903 dual immersion)
# -5.38 -> -1.05. Worksheet-validated on "simulated case 48" (Elmhurst SAP 57,
@ -305,8 +314,8 @@ _MIN_WITHIN_HALF_SAP = 0.770
# brick/stone (the only §5.8 R-value path); within-0.5 held at 77.0%, MAE
# 0.658 -> 0.647, PE 3.2 -> 3.1. Unit-pinned in test_rdsap_uvalues.
_MAX_SAP_MAE = 0.648
_MAX_CO2_MAE_TONNES = 0.075 # t CO2 / yr vs co2_emissions_current
_MAX_PE_PER_M2_MAE = 3.2 # kWh / m2 / yr vs energy_consumption_current
_MAX_CO2_MAE_TONNES = 0.074 # t CO2 / yr vs co2_emissions_current
_MAX_PE_PER_M2_MAE = 3.1 # kWh / m2 / yr vs energy_consumption_current
def _load_corpus() -> list[dict[str, Any]]: