England and Wales: 1967-1975
none of the above
System built, as built, no insulation (assumed)
(another dwelling below)
No low energy lighting
Pitched, limited insulation (assumed)
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Portable electric heaters (assumed)
Mostly double glazing
double glazing installed before 2002
Manual charge control
marketed sale
Cavity wall, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 83% of fixed outlets
Pitched, limited insulation (assumed)
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Portable electric heaters (assumed)
Fully double glazed
double glazing installed during or after 2002
Manual charge control