England and Wales: before 1900
rental (private)
Granite or whinstone, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 18% of fixed outlets
Pitched, insulated at rafters
Boiler and radiators, dual fuel (mineral and wood)
From main system
dual fuel - mineral + wood
Portable electric heaters (assumed)
Fully double glazed
double glazing installed before 2002
TRVs and bypass
RHI application
Granite or whinstone, as built, no insulation (assumed)
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)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing, unknown install date
Programmer, TRVs and bypass