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c11eb46b8a
The HHR-storage HeatingOverlay (ADR-0024) added an off-peak electric immersion cylinder but never set `immersion_heating_type`, so the overlaid cert left it None. The calculator then could not resolve `immersion_single` for the SAP 10.2 Table 13 HW high-rate split and billed hot water 100% at the off-peak low rate — £127.41 vs the relodged after-cert's £169.39, overstating the overlay's SAP by +1.26 (CO2/PE matched, isolating it to the HW cost path). Add `immersion_heating_type` to HeatingOverlay, route it through `_fold_heating` (it lives on `sap_heating`), and set it to 1 (single off-peak immersion) on the HHR overlay to match the relodged reference. Closes both `test_hhr_storage_overlay_reproduces_the_relodged_after_*` cascade pins (electric-storage and no-system befores share the after). Pre-existing failure (present before this branch's recent commits), outside the handover regression gate. Full modelling suite 220 pass, pyright net- zero. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> |
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| .. | ||
| addresses | ||
| billing | ||
| fuel_rates | ||
| magicplan | ||
| modelling | ||
| property | ||
| property_baseline | ||
| sap10_calculator | ||
| tasks | ||
| __init__.py | ||
| test_building_geometry.py | ||
| test_postcode.py | ||