England and Wales: before 1900
marketed sale
Sandstone or limestone, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Boiler and radiators, wood pellets
From main system
bulk wood pellets
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs
none of the above
Sandstone or limestone, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, 300 mm loft insulation
Boiler and radiators, wood pellets
From main system, no cylinder thermostat
bulk wood pellets
Portable electric heaters (assumed)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass