England and Wales: before 1900
marketed sale
Granite or whinstone, with internal insulation
Solid, no insulation (assumed)
No low energy lighting
Pitched, 150 mm loft insulation
No system present: electric heaters assumed
Electric immersion, standard tariff
To be used only when there is no heating/hot-water system or data is from a community network
Single glazed
not defined
marketed sale
Granite or whinstone, with internal insulation
Solid, no insulation (assumed)
No low energy lighting
Pitched, 150 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Single glazed
not defined
Programmer and room thermostat