England and Wales: before 1900
none of the above
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 75% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, mains gas
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass
none of the above
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 75% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, mains gas
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass