England and Wales: before 1900
marketed sale
Sandstone or limestone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 86% of fixed outlets
Pitched, 270 mm loft insulation
Room heaters, dual fuel (mineral and wood)
From main system, no cylinder thermostat
dual fuel - mineral + wood
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed during or after 2002
Appliance thermostats
non marketed sale
Sandstone or limestone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 86% of fixed outlets
Pitched, 270 mm loft insulation
Boiler and radiators, wood logs
From main system, no cylinder thermostat
wood logs
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass