England and Wales: before 1900
RHI application
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, no insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, dual fuel (mineral and wood)
Single glazed
not defined
Manual charge control
RHI application
Granite or whinstone, with internal insulation
Solid, insulated
Low energy lighting in all fixed outlets
Pitched, insulated
Air source heat pump, underfloor, electric
From main system
electricity (not community)
Room heaters, wood logs
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control