England and Wales: before 1900
rental
Solid brick, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in all fixed outlets
Pitched, 150 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Some double glazing
double glazing installed during or after 2002
Programmer, room thermostat and TRVs
rental
Solid brick, as built, no insulation (assumed)
Solid, insulated
Low energy lighting in all fixed outlets
(another dwelling above)
Boiler and underfloor heating, mains gas
From main system
mains gas (not community)
Mostly double glazing
double glazing installed during or after 2002
Time and temperature zone control