England and Wales: before 1900
none of the above
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
No low energy lighting
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Some double glazing
not defined
Programmer, room thermostat and TRVs
none of the above
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
No low energy lighting
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Partial double glazing
not defined
Programmer, room thermostat and TRVs