England and Wales: before 1900
RHI application
Granite or whinstone, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, insulated (assumed)
Boiler and radiators, oil, Boiler and radiators, dual fuel (mineral and wood)
From main system
oil (not community)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs
RHI application
Granite or whinstone, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, insulated (assumed)
Boiler and radiators, oil, Boiler and radiators, dual fuel (mineral and wood)
From main system
oil (not community)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs