England and Wales: 1983-1990
RHI application
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 90% of fixed outlets
Pitched, 50 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, coal
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass
RHI application
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 90% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, oil
From main system
oil (not community)
Room heaters, coal
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass