England and Wales: 1930-1949
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 400+ mm loft insulation
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, electric
Mostly secondary glazing
secondary glazing
Programmer and room thermostat
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 94% of fixed outlets
Pitched, 75 mm loft insulation
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass