England and Wales: before 1900
rental (social)
Solid brick, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 67% of fixed outlets
Pitched, no insulation
Boiler and radiators, LPG
From main system
LPG (not community)
Fully double glazed
double glazing installed before 2002
Programmer, no room thermostat
rental
Solid brick, as built, no insulation (assumed)
(other premises below)
No low energy lighting
Pitched, no insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
TRVs and bypass