Gov-API certs that lodge a gas boiler as main_heating_category=2 + a PCDB
main_heating_index_number but omit sap_main_heating_code were carried with
a null code, so the heating generators (which gated on sap_main_heating_code
alone) never evaluated them for a boiler upgrade or a system tune-up — they
silently got nothing (£0 works, plateau at D). The SAP calculator already
handles this shape (cert_to_inputs._is_wet_boiler_main), so the calculator
modelled these as wet boilers while the recommenders ignored them.
Mirror the calculator's classification in the generator:
- _is_wet_boiler / _is_electric_boiler fall back, when no SAP code is
lodged, to a PCDB Table 105 boiler index or main_heating_category in
{1,2} (heat pumps excluded); electric boilers stay excluded by the code
range when lodged, else by an electricity main fuel.
- _already_condensing reads the boiler's declared PCDB winter efficiency
when there is no Table 4b code, so a modern condensing boiler lodged this
way still isn't offered a pointless like-for-like swap (gets a tune-up).
Verified read-only on portfolio 814 / scenario 1271: pids 742304, 742306,
742322, 742325, 742336 now get a gas_boiler_upgrade (two cross D->C on the
boiler alone) where they had £0 works; predicted properties whose heating
donor is a PCDB-shape boiler (e.g. 742095/742102/742105) also recover a
tune-up. Fixes the A#2 slice of #1388 (and unblocks 742302/742367).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The PropertyBaselineOrchestrator now reads no Lodged Performance off a predicted
Property's neighbour-synthesised EPC: lodged is None when source_path is
'predicted', so no phantom lodged figure is manufactured. The Effective half is
unchanged. Rebaseliner port + PropertyBaselinePerformance.lodged widen to
Optional; the pristine-cert paths assert non-None (lodged is None only for a
predicted Property, which is always physical_state_changed).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Covers the 10 audited "community CHP and boilers" properties (302) alongside the
2,210 "community boilers" (301) — both were mis-bucketed to Gas CPSU.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Generalise the room-heater category-10 + conservative-control drag to cover both
solid and oil families; oil's natural fuel is heating oil (28).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Heat pump drags category 4 + electricity (29). Meter stays single-rate: a heat
pump does not imply an off-peak tariff the way storage/CPSU do (SAP §12 Rule 3
is conditional), so forcing Dual would mis-bill it.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Solid fuel is ambiguous across coal/wood/smokeless/pellets, so the overlay
defaults to house coal (33, the most common) when no main_fuel override is
given; a specific solid-fuel override still wins by last-wins composition.
Updates the ADR-0041 natural-fuel amendment accordingly (every archetype drags
a natural fuel; solid defaults to coal).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
