England and Wales: before 1900
none of the above
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, no insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Portable electric heaters (assumed)
Mostly double glazing
double glazing, unknown install date
Programmer, TRVs and bypass
FiT application
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 86% of fixed outlets
Pitched, no insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass