England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 40% of fixed outlets
Pitched, no insulation (assumed)
Room heaters, dual fuel (mineral and wood)
Electric immersion, standard tariff
dual fuel - mineral + wood
Portable electric heaters (assumed)
Single glazed
not defined
No thermostatic control of room temperature
none of the above
Solid brick, with internal insulation
Solid, no insulation (assumed)
No low energy lighting
Pitched, 250 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
High performance glazing
double, known data
Programmer, room thermostat and TRVs