England and Wales: 1930-1949
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 78% of fixed outlets
Pitched, 100 mm loft insulation
Room heaters, mains gas
Gas multipoint
mains gas (not community)
Portable electric heaters (assumed)
Mostly double glazing
double glazing installed during or after 2002
Appliance thermostats
marketed sale
Cavity wall, with internal insulation
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Air source heat pump, underfloor, electric
From main system, plus solar
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control