England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, oil
Electric immersion, off-peak
oil (not community)
Room heaters, wood logs
Some secondary glazing
secondary glazing
Programmer, TRVs and bypass
RHI application
Solid brick, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Flat, insulated (assumed)
Ground source heat pump, radiators, electric
From main system
electricity (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control