England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, insulated (assumed)
Low energy lighting in 42% of fixed outlets
Pitched, 150 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Partial double glazing
double glazing, unknown install date
Programmer, TRVs and bypass
RHI application
Solid brick, with internal insulation
Solid, insulated
Low energy lighting in all fixed outlets
Pitched, insulated at rafters
Ground source heat pump, underfloor, electric
From main system
electricity (not community)
Fully double glazed
double, known data
Time and temperature zone control