England and Wales: before 1900
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 39% of fixed outlets
Pitched, no insulation
Warm air, mains gas
Electric immersion, standard tariff
mains gas (not community)
Some double glazing
double glazing installed before 2002
Programmer and at least two room thermostats
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, insulated at rafters
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, wood logs
Partial double glazing
double glazing installed during or after 2002
Programmer and at least two room thermostats