England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 36% of fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, dual fuel (mineral and wood)
Mostly secondary glazing
secondary glazing
Programmer, room thermostat and TRVs
marketed sale
Solid brick, with internal insulation
Suspended, insulated
Low energy lighting in all fixed outlets
Flat, insulated (assumed)
Air source heat pump, underfloor, electric, Air source heat pump, radiators, electric
From main system
electricity (not community)
Room heaters, LPG
Fully double glazed
double glazing, unknown install date
Time and temperature zone control