England and Wales: 1976-1982
marketed sale
System built, as built, partial insulation (assumed)
To external air, no insulation (assumed)
Low energy lighting in 53% of fixed outlets
Flat, limited insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Single glazed
not defined
Programmer, room thermostat and TRVs
rental
System built, as built, partial insulation (assumed)
To external air, insulated
Low energy lighting in all fixed outlets
Flat, limited insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Single glazed
not defined
Programmer, room thermostat and TRVs