England and Wales: 1900-1929
RHI application
Sandstone or limestone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 78% of fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, wood logs
Single glazed
not defined
Programmer, room thermostat and TRVs
RHI application
Sandstone or limestone, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in 78% of fixed outlets
Roof room(s), insulated
Air source heat pump, radiators, electric
From main system
electricity (not community)
Room heaters, wood logs
Single glazed
not defined
Programmer, TRVs and bypass