England and Wales: 1950-1966
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 45% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Partial double glazing
double glazing installed during or after 2002
Programmer, TRVs and bypass
none of the above
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 46% of fixed outlets
Pitched, limited insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Partial double glazing
double glazing, unknown install date
Programmer, room thermostat and TRVs