England and Wales: 1967-1975
marketed sale
System built, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Flat, limited insulation (assumed)
Boiler and radiators, LPG
Electric immersion, off-peak
bottled LPG
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs
marketed sale
System built, with external insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Flat, insulated
Boiler and radiators, LPG
Electric immersion, off-peak
bottled LPG
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs