England and Wales: before 1900
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 8% of fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, dual fuel (mineral and wood)
From main system, plus solar
dual fuel - mineral + wood
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs
RHI application
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 400+ mm loft insulation
Boiler and radiators, LPG
From main system, plus solar
LPG (not community)
Room heaters, LPG
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs