England and Wales: before 1900
non marketed sale
Timber frame, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, no insulation (assumed)
Air source heat pump, radiators, electric
From main system
electricity (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control
marketed sale
Timber frame, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, no insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Portable electric heaters (assumed)
Fully double glazed
double glazing installed before 2002
Time and temperature zone control