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The prior comment blamed a stale build-side combi artifact (already fixed this session) and my earlier conversational claim that Elmhurst's overall SAP used regional weather was wrong too — verified the worksheet's (5) dwelling volume and wind table match our UK-average rating cascade exactly. The actual, now-quantified driver: Elmhurst's worksheet (201)/(202)/(215) show it unconditionally applies SAP 10.2 Table 11's 10% secondary/portable- electric-heater fraction based on main heating category alone, with no secondary lodged on the cert. Our `_secondary_fraction` deliberately gates this on an actual lodged/forced secondary (see the adjacent S-B30 note: applying it unconditionally regressed the full 1000-cert corpus MAE by +0.16). Forcing Table 11 on for just this cert moves 76.33 -> 73.62 (~62% of the 76.33-vs-72 gap) — confirms this, not a mapping error, drives the residual. Documented so the next reader doesn't re-litigate it. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> |
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| domain | ||
| e2e | ||
| fixtures/epc_prediction | ||
| harness | ||
| infrastructure | ||
| lambdas | ||
| magic_plan | ||
| orchestration | ||
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| utilities | ||
| __init__.py | ||
| conftest.py | ||
| test_lambda_packaging.py | ||