England and Wales: 1900-1929
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 63% of fixed outlets
Pitched, 200 mm loft insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Portable electric heaters (assumed)
Fully double glazed
double glazing installed before 2002
Manual charge control
marketed sale
Solid brick, with internal insulation
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 400+ mm loft insulation
Air source heat pump, radiators, electric
From main system, plus solar
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass