England and Wales: before 1900
marketed sale
Timber frame, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 9% of fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, dual fuel (mineral and wood)
Some double glazing
double glazing installed before 2002
Programmer and room thermostat
none of the above
Timber frame, with additional insulation
Solid, insulated
Low energy lighting in 30% of fixed outlets
Pitched, no insulation
Boiler and radiators, oil
From main system
oil (not community)
Portable electric heaters (assumed)
Mostly double glazing
double glazing installed during or after 2002
Programmer, room thermostat and TRVs