England and Wales: 1900-1929
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 21% of fixed outlets
Pitched, no insulation (assumed)
Electric storage heaters
Gas instantaneous at point of use
electricity (not community)
Portable electric heaters (assumed)
Single glazed
not defined
Manual charge control
FiT application
Solid brick, with internal insulation
Solid, no insulation (assumed)
No low energy lighting
Pitched, insulated
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 installed during or after 2002