England and Wales: before 1900
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, no insulation (assumed)
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, dual fuel (mineral and wood)
Mostly double glazing
double glazing installed during or after 2002
Manual charge control
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, insulated at rafters
Air source heat pump, warm air, electric
Electric instantaneous at point of use
electricity (not community)
Room heaters, wood logs
Mostly double glazing
double glazing installed during or after 2002
Programmer and room thermostat