England and Wales: 1983-1990
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in 40% of fixed outlets
Pitched, 50 mm loft insulation
Boiler and radiators, coal
From main system, no cylinder thermostat
house coal (not community)
Portable electric heaters (assumed)
Fully double glazed
double glazing installed before 2002
TRVs and bypass
non marketed sale
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in 67% of fixed outlets
Pitched, 200 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed before 2002
Time and temperature zone control