England and Wales: 1900-1929
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 70% of fixed outlets
Pitched, no insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, wood logs
Mostly triple glazing
triple glazing
Programmer, room thermostat and TRVs
none of the above
Average thermal transmittance 0.26 W/m-¦K
Average thermal transmittance 0.25 W/m-¦K
Low energy lighting in all fixed outlets
Average thermal transmittance 0.17 W/m-¦K
Boiler and radiators, mains gas
From main system
mains gas - this is for backwards compatibility only and should not be used
Fully double glazed
Programmer, room thermostat and TRVs