England and Wales: before 1900
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 12% of fixed outlets
Pitched, no insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Full secondary glazing
secondary glazing
Programmer, TRVs and bypass
FiT application
Cavity wall, filled cavity
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, insulated at rafters
Air source heat pump, radiators, electric
From main system
electricity (not community)
Single glazed
not defined
Time and temperature zone control