England and Wales: 1967-1975
marketed sale
Cavity wall, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
Pitched, limited insulation (assumed)
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Some double glazing
double glazing installed before 2002
Manual charge control
RHI application
Cavity wall, with internal insulation
Solid, insulated
Low energy lighting in all fixed outlets
Pitched, insulated
Air source heat pump, radiators, electric
From main system, plus solar
electricity (not community)
Room heaters, electric
Fully triple glazed
triple glazing
Programmer and at least two room thermostats