England and Wales: 1900-1929
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 40% of fixed outlets
Pitched, no insulation (assumed)
No system present: electric heaters assumed
No system present: electric immersion assumed
To be used only when there is no heating/hot-water system
Single glazed
not defined
marketed sale
Solid brick, with internal insulation
Solid, insulated
Low energy lighting in 80% of fixed outlets
Pitched, 400+ mm loft insulation
Boiler and underfloor heating, LPG
From main system
LPG (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing, unknown install date
Time and temperature zone control