England and Wales: before 1900
none of the above
Timber frame, as built, no insulation (assumed)
(another dwelling below)
No low energy lighting
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
Fully double glazed
double glazing installed before 2002
marketed sale
Solid brick, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
Flat, insulated
Electric underfloor heating
Electric immersion, off-peak
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control