England and Wales: 1967-1975
not sale or rental
Average thermal transmittance 0.25 W/m-¦K
Average thermal transmittance 0.15 W/m-¦K
Low energy lighting in all fixed outlets
Average thermal transmittance 0.12 W/m-¦K
Boiler and radiators, mains gas
From main system
Gas: mains gas
High performance glazing
Time and temperature zone control
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, insulated
Low energy lighting in all fixed outlets
Flat, insulated
Boiler and underfloor heating, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer and room thermostat