England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 50% of fixed outlets
Pitched, no insulation (assumed)
Electric storage heaters
Electric instantaneous at point of use
electricity (not community)
Portable electric heaters (assumed)
Single glazed
not defined
Manual charge control
marketed sale
Solid brick, with internal insulation
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Mostly double glazing
double glazing installed during or after 2002
Programmer, room thermostat and TRVs