England and Wales: 2007 onwards
marketed sale
System built, as built, insulated (assumed)
(other premises below)
Low energy lighting in 38% of fixed outlets
(another dwelling above)
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
marketed sale
System built, as built, insulated (assumed)
(other premises below)
Low energy lighting in 60% of fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer and room thermostat