England and Wales: 1967-1975
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 270 mm loft insulation
Room heaters, mains gas
Electric immersion, off-peak
mains gas (not community)
Room heaters, electric
Fully double glazed
double glazing installed during or after 2002
Appliance thermostats
RHI application
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 89% of fixed outlets
Pitched, 270 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Mostly double glazing
double glazing installed during or after 2002
Time and temperature zone control