England and Wales: 2012 onwards
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 91% of fixed outlets
Pitched, 350 mm loft insulation
Warm air, mains gas
Gas multipoint
mains gas (not community)
Room heaters, mains gas
Mostly double glazing
double glazing installed before 2002
Programmer and room thermostat
marketed sale
Cavity wall, filled cavity and external insulation
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, 100 mm loft insulation
Air source heat pump, underfloor, electric
From main system
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer and room thermostat