England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 67% of fixed outlets
Pitched, 75 mm loft insulation
Room heaters, dual fuel (mineral and wood)
Electric immersion, off-peak
dual fuel - mineral + wood
Portable electric heaters (assumed)
Mostly double glazing
double glazing installed before 2002
No thermostatic control of room temperature
rental (private)
Solid brick, with internal insulation
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, insulated at rafters
Boiler and radiators, mains gas
From main system
mains gas (not community)
High performance glazing
double, known data
Time and temperature zone control