England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 75% of fixed outlets
Pitched, 100 mm loft insulation
No system present: electric heaters assumed
Gas instantaneous at point of use
To be used only when there is no heating/hot-water system
Partial double glazing
double glazing, unknown install date
rental (private)
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 63% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, wood logs
Partial double glazing
double glazing, unknown install date
Programmer, TRVs and bypass