England and Wales: 1983-1990
marketed sale
Timber frame, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, 100 mm loft insulation
No system present: electric heaters assumed
Electric immersion, off-peak
To be used only when there is no heating/hot-water system
Single glazed
not defined
non marketed sale
Timber frame, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in 20% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, LPG
From main system
bottled LPG
Room heaters, dual fuel (mineral and wood)
Single glazed
not defined
Programmer, room thermostat and TRVs