England and Wales: 1996-2002
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in 40% 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 and room thermostat
marketed sale
Cavity wall, as built, insulated (assumed)
Suspended, limited insulation (assumed)
Low energy lighting in 77% of fixed outlets
Pitched, insulated (assumed)
Air source heat pump, radiators, electric
From main system
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass