England and Wales: before 1900
non marketed sale
Granite or whinstone, as built, no insulation (assumed)
To unheated space, no insulation (assumed)
Low energy lighting in 25% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, oil
From main system, no cylinder thermostat
oil (not community)
Fully double glazed
not defined
Programmer and room thermostat
marketed sale
Granite or whinstone, as built, no insulation (assumed)
To unheated space, insulated
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs