England and Wales: 1930-1949
non marketed sale
Cavity wall, as built, no insulation (assumed)
To unheated space, no insulation (assumed)
Low energy lighting in 64% of fixed outlets
Pitched, no insulation (assumed)
Boiler and radiators, mains gas
Electric immersion, standard tariff
mains gas (not community)
Room heaters, mains gas
Full secondary glazing
secondary glazing
Room thermostat only
marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 70% of fixed outlets
Pitched, 300 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass