England and Wales: before 1900
non marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 40% of fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass
rental
Solid brick, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
(another dwelling above)
Community scheme
Community scheme
mains gas (community)
Fully double glazed
double glazing installed during or after 2002
Charging system linked to use of community heating, programmer and TRVs