England and Wales: 1950-1966
marketed sale
Timber frame, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 55% of fixed outlets
Roof room(s), no insulation (assumed)
Boiler and radiators, dual fuel (mineral and wood)
Electric immersion, standard tariff
dual fuel - mineral + wood
Fully double glazed
double glazing installed during or after 2002
TRVs and bypass
RHI application
Timber frame, as built, partial insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, no insulation (assumed)
Ground source heat pump, radiators, electric
From main system
electricity (not community)
Room heaters, wood logs
Mostly double glazing
double glazing, unknown install date
Programmer, TRVs and bypass