England and Wales: 1930-1949
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 8% of fixed outlets
Pitched, 300 mm loft insulation
Room heaters, mains gas
Electric instantaneous at point of use
mains gas (not community)
Portable electric heaters (assumed)
Partial double glazing
double glazing installed during or after 2002
Appliance thermostats
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, insulated
Low energy lighting in 81% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs