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added flat_insulated_efficiency_age_band

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This commit is contained in:
Khalim Conn-Kowlessar 2026-02-02 14:57:31 +00:00
parent c8c283cd90
commit f7d614d6ec
1 changed files with 34 additions and 1 deletions
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35
backend/onboarders/epc_descriptions.py
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@ -368,7 +368,34 @@ def flat_limited_insulation_efficiency(age_band: EpcConstructionAgeBand) -> EpcE
pass
def flat_insulated_efficiency(age_band: EpcConstructionAgeBand) -> EpcEfficiency:
def flat_insulated_efficiency_age_band(age_band: EpcConstructionAgeBand) -> EpcEfficiency:
"""
before 1900, 1900-1929, 1930-1949, 1950-1966, 1967-1975 -> Pitched, no insulation, Very Poor
1976-1982 -> Pitched, limited insulation, Poor
1983-1990, to 1996-2002 Pitched, insulated, Average
2003 - 2006, 2012-2022 -> Pitched, insulated, Good
2023 onwards -> Pitched, insulated, Very Good
:param age_band: EpcConstructionAgeBand
:return: EpcEfficiency
"""
start_year = age_band.start_year()
if start_year >= 2023:
return EpcEfficiency.VERY_GOOD
if start_year >= 2003:
return EpcEfficiency.GOOD
if start_year >= 1983:
return EpcEfficiency.AVERAGE
if start_year >= 1976:
return EpcEfficiency.POOR
return EpcEfficiency.VERY_POOR
def flat_insulated_efficiency_thickness(insulation_thickness: int | None) -> EpcEfficiency:
pass
@ -453,4 +480,10 @@ ROOF_DESCRIPTION_EFFICIENCIES: Mapping[EpcRoofDescriptions, RoofEfficiencyRule]
# function mappings
EpcRoofDescriptions.pitched_insulated_assumed: loft_insulated_efficiency,
# Loft af rafters
EpcRoofDescriptions.loft_insulated_at_rafters: loft_insulated_at_rafters_efficiency,
# Another dwelling above
EpcRoofDescriptions.another_dwelling_above: EpcEfficiency.NA,
}