England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 35% of fixed outlets
Pitched, 150 mm loft insulation
Boiler and radiators, mains gas
Gas boiler/circulator, no cylinder thermostat
mains gas (not community)
Partial secondary glazing
secondary glazing
Programmer, TRVs and bypass
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Room heaters, wood logs
Partial double glazing
double glazing installed during or after 2002
Programmer, room thermostat and TRVs