England and Wales: before 1900
rental (private)
Timber frame, with additional insulation
(another dwelling below)
No low energy lighting
Pitched, no insulation
No system present: electric heaters assumed
Electric instantaneous at point of use
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing installed during or after 2002
rental
Timber frame, with additional insulation
(another dwelling below)
No low energy lighting
Pitched, 250 mm loft insulation
No system present: electric heaters assumed
Electric instantaneous at point of use
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