England and Wales: 1930-1949
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 75% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Mostly double glazing
double glazing installed before 2002
Programmer and room thermostat
RHI application
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, insulated (assumed)
Air source heat pump, radiators, electric
From main system, plus solar
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass