England and Wales: before 1900
marketed sale
Sandstone or limestone, with internal insulation
Solid, insulated
Low energy lighting in 80% of fixed outlets
Roof room(s), insulated (assumed)
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, wood logs
Mostly double glazing
double glazing, unknown install date
Programmer, room thermostat and TRVs
RHI application
Granite or whinstone, with internal insulation
Solid, insulated
Low energy lighting in all fixed outlets
Pitched, insulated
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, wood logs
Fully double glazed
double glazing installed during or after 2002
Programmer and at least two room thermostats