England and Wales: 1967-1975
rental (social)
Cavity wall, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 33% of fixed outlets
Pitched, limited insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer and at least two room thermostats
rental (social)
Cavity wall, filled cavity
(another dwelling below)
Low energy lighting in 29% of fixed outlets
Pitched, 50 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass