England and Wales: 1930-1949
none of the above
Cavity wall, as built, no insulation (assumed)
(other premises below)
Low energy lighting in 29% of fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Partial double glazing
double glazing, unknown install date
Programmer, TRVs and bypass
rental (private)
Cavity wall, filled cavity
(another dwelling below)
Low energy lighting in all fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Partial double glazing
double glazing, unknown install date
Programmer, room thermostat and TRVs