England and Wales: before 1900
none of the above
Cavity wall, as built, no insulation (assumed)
To external air, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs
none of the above
Cavity wall, filled cavity
To external air, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs