England and Wales: 1950-1966
RHI application
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 89% of fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, wood logs
From main system, no cylinder thermostat, plus solar
wood logs
Fully double glazed
double glazing installed before 2002
TRVs and bypass
RHI application
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 89% of fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, wood logs
From main system, plus solar
wood logs
Fully double glazed
double glazing installed before 2002
TRVs and bypass