England and Wales: before 1900
rental (private)
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 60% of fixed outlets
Flat, no insulation
No system present: electric heaters assumed
Electric instantaneous at point of use
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing, unknown install date
rental
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Flat, limited insulation
Room heaters, electric
Electric instantaneous at point of use
electricity (not community)
Fully double glazed
double glazing, unknown install date
Programmer and appliance thermostats