England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 67% of fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, wood logs, Electric storage heaters
From main system, no cylinder thermostat
wood logs
Room heaters, wood logs
Partial secondary glazing
secondary glazing
TRVs and bypass
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 100 mm loft insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, wood logs
Partial double glazing
double glazing installed during or after 2002
Manual charge control