England and Wales: 1930-1949
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 70% of fixed outlets
Pitched, 50 mm loft insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, electric
Single glazed
not defined
Manual charge control
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control