England and Wales: 1976-1982
none of the above
Cavity wall, with external insulation
Solid, no insulation (assumed)
Low energy lighting in 25% of fixed outlets
Pitched, 300+ mm loft insulation
No system present: electric heaters assumed
Electric immersion, standard tariff
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing installed during or after 2002
RHI application
Cavity wall, with external insulation
Solid, no insulation (assumed)
Low energy lighting in 38% of fixed outlets
Pitched, 300 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass