England and Wales: 1996-2002
marketed sale
Cavity wall, as built, insulated (assumed)
Suspended, limited insulation (assumed)
Low energy lighting in 33% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed before 2002
Time and temperature zone control
marketed sale
Cavity wall, filled cavity
Solid, limited insulation (assumed)
Low energy lighting in 58% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, wood logs
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control