FiT application
Timber frame, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in 35% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, room thermostat and TRVs
none of the above
Average thermal transmittance 0.18 W/m-¦K
Average thermal transmittance 0.13 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
Time and temperature zone control