England and Wales: 1996-2002
marketed sale
System built, as built, insulated (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
Pitched, insulated (assumed)
Boiler and underfloor heating, mains gas, Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, mains gas
Fully double glazed
double glazing installed before 2002
Programmer and at least two room thermostats
marketed sale
System built, as built, insulated (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
Pitched, insulated (assumed)
Air source heat pump, radiators, electric
Electric heat pump for water heating only
electricity (not community)
Fully double glazed
double glazing installed before 2002
Time and temperature zone control