England and Wales: before 1900
marketed sale
Sandstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 95% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, oil
Oil range cooker
oil (not community)
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs
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