England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
To unheated space, no insulation (assumed)
Low energy lighting in 59% of fixed outlets
Pitched, 150 mm loft insulation
Boiler and radiators, wood logs
From main system
wood logs
Room heaters, dual fuel (mineral and wood)
Mostly secondary glazing
secondary glazing
TRVs and bypass
RHI application
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, wood logs
From main system
wood logs
Room heaters, electric
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs