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Map landlord electric room heaters to the direct-acting room-heater SAP code 🟩

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'Electric room heaters' archetype -> SAP Table 4a code 691 (panel/convector/
radiant), on a single-rate meter (691 is not off-peak-implying, unlike storage).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Khalim Conn-Kowlessar 2026-06-29 15:59:25 +00:00
parent ce59413f46
commit ada2bc078e
1 changed files with 6 additions and 3 deletions
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9
domain/epc/property_overlays/main_heating_system_overlay.py
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@ -80,9 +80,11 @@ _FROM_MAIN_WATER_HEATING_CODE = 901
# Canonical system archetype → representative SAP `sap_main_heating_code`. Codes
# map to the modern/condensing variant (A-G efficiency deferred): 102 regular
# condensing, 104 condensing combi, 120 CPSU, 401-404 storage heaters, 191
# direct-acting electric. Companion fields (meter / control / fuel / hot water)
# are NOT listed here — they are derived from the code below, so a new archetype
# is just a code (ADR-0035 drag-along).
# direct-acting electric, 691 panel/convector/radiant electric room heaters
# (Table 4a — direct-acting, so a single-rate meter, NOT off-peak storage).
# Companion fields (meter / control / fuel / hot water) are NOT listed here —
# they are derived from the code below, so a new archetype is just a code
# (ADR-0035 drag-along).
_MAIN_HEATING_CODES: dict[str, int] = {
"Gas boiler, combi": 104,
"Gas boiler, regular": 102,
@ -92,6 +94,7 @@ _MAIN_HEATING_CODES: dict[str, int] = {
"Electric storage heaters, convector": 403,
"Electric storage heaters, fan": 404,
"Direct-acting electric": 191,
"Electric room heaters": 691,
}