England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 50% of fixed outlets
Pitched, insulated at rafters
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, wood logs
Single glazed
not defined
Programmer and room thermostat
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, insulated at rafters
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, wood logs
Single glazed
not defined
Room thermostat only