marketed sale
Cavity wall, as built, insulated (assumed)
Suspended, insulated (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, insulated (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs
non marketed sale
Average thermal transmittance 0.25 W/m-¦K
Average thermal transmittance 0.17 W/m-¦K
Low energy lighting in all fixed outlets
Average thermal transmittance 0.14 W/m-¦K
Boiler and radiators, mains gas
From main system
mains gas - this is for backwards compatibility only and should not be used
High performance glazing
Programmer, room thermostat and TRVs