England and Wales: before 1900
rental (private)
Timber frame, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 50% of fixed outlets
Pitched, no insulation
No system present: electric heaters assumed
Electric immersion, standard tariff
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing, unknown install date
rental
Timber frame, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
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
Programmer, TRVs and bypass