England and Wales: before 1900
rental (social)
Granite or whinstone, with external insulation
Solid, no insulation (assumed)
Low energy lighting in 25% of fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass
ECO assessment
Solid brick, with external insulation
Solid, no insulation (assumed)
Low energy lighting in 38% of fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass