England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
(another dwelling above)
Room heaters, electric
Community scheme
electricity (not community)
Full secondary glazing
secondary glazing
Appliance thermostats
non marketed sale
Solid brick, as built, insulated (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
(another dwelling above)
Air source heat pump, radiators, electric
From main system
electricity (not community)
Full secondary glazing
secondary glazing
Time and temperature zone control