England and Wales: 1950-1966
none of the above
System built, as built, no insulation (assumed)
(other premises below)
Low energy lighting in 25% of fixed outlets
Flat, limited insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, mains gas
Fully double glazed
double glazing installed before 2002
Manual charge control
rental (social)
System built, with external insulation
(another dwelling below)
Low energy lighting in 50% of fixed outlets
Flat, insulated
Room heaters, electric
Electric immersion, off-peak
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer and appliance thermostats