England and Wales: 1996-2002
marketed sale
System built, as built, insulated (assumed)
Solid, limited insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, insulated (assumed)
Boiler and underfloor heating, oil
From main system
oil (not community)
Fully double glazed
double glazing installed before 2002
Time and temperature zone control
marketed sale
Timber frame, with additional insulation
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, insulated at rafters
Boiler and underfloor heating, oil
Electric heat pump for water heating only, plus solar
oil (not community)
Room heaters, coal
Fully double glazed
double glazing installed during or after 2002
Programmer and room thermostat