England and Wales: before 1900
marketed sale
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 50% of fixed outlets
Pitched, 270 mm loft insulation
Room heaters, electric
Electric immersion, standard tariff
electricity (not community)
Partial secondary glazing
secondary glazing
Appliance thermostats
marketed sale
Solid brick, with internal insulation
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Roof room(s), insulated (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs