England and Wales: before 1900
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 90% of fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, dual fuel (mineral and wood)
From main system
dual fuel - mineral + wood
Portable electric heaters (assumed)
Fully double glazed
double glazing, unknown install date
No time or thermostatic control of room temperature
RHI application
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 85% of fixed outlets
Roof room(s), insulated
Boiler and radiators, LPG
From main system
LPG (not community)
Room heaters, wood logs
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs