England and Wales: before 1900
none of the above
Solid brick, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 300+ mm loft insulation
Air source heat pump, underfloor, electric
From main system
electricity (not community)
Fully double glazed
double glazing installed before 2002
Time and temperature zone control
RHI application
Solid brick, with internal insulation
Solid, no insulation (assumed)
Low energy lighting in 41% of fixed outlets
Pitched, 350 mm loft insulation
Air source heat pump, radiators, electric
From main system
electricity (not community)
Fully double glazed
double glazing installed before 2002
Programmer and at least two room thermostats