England and Wales: 1900-1929
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 55% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system, plus solar
mains gas (not community)
Room heaters, mains gas
Mostly double glazing
double glazing installed before 2002
Programmer, TRVs and bypass
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Full secondary glazing
secondary glazing
Programmer, room thermostat and TRVs