England and Wales: 1976-1982
none of the above
Timber frame, as built, partial insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 7% of fixed outlets
Roof room(s), ceiling insulated
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
none of the above
Timber frame, as built, partial insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 7% of fixed outlets
Pitched, 300+ mm loft insulation
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