England and Wales: before 1900
RHI application
Sandstone or limestone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 88% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Mostly double glazing
double glazing, unknown install date
Programmer, TRVs and bypass
RHI application
Sandstone or limestone, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 200 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Mostly double glazing
double glazing, unknown install date
Programmer and at least two room thermostats