England and Wales: 1950-1966
non marketed sale
Cavity wall, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 25% of fixed outlets
Flat, no insulation (assumed)
No system present: electric heaters assumed
No system present: electric immersion assumed
To be used only when there is no heating/hot-water system or data is from a community network
Fully double glazed
double glazing, unknown install date
rental
System built, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
Flat, no insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass