England and Wales: 1930-1949
rental (private)
Solid brick, as built, insulated (assumed)
Solid, no insulation (assumed)
No low energy lighting
Flat, insulated (assumed)
No system present: electric heaters assumed
Electric immersion, off-peak
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing installed before 2002
rental
Timber frame, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Flat, insulated
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Portable electric heaters (assumed)
Fully double glazed
double glazing installed during or after 2002
Controls for high heat retention storage heaters