England and Wales: 1950-1966
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 45% of fixed outlets
Pitched, insulated at rafters
Boiler and radiators, dual fuel (mineral and wood)
Electric immersion, off-peak
dual fuel - mineral + wood
Fully double glazed
double glazing installed before 2002
TRVs and bypass
RHI application
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, dual fuel (mineral and wood)
Electric immersion, off-peak
dual fuel - mineral + wood
Portable electric heaters (assumed)
Fully double glazed
double glazing, unknown install date
TRVs and bypass