England and Wales: before 1900
ECO assessment
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 88% of fixed outlets
Pitched, no insulation
Electric underfloor heating
From main system, plus solar
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Room thermostat only
FiT application
Granite or whinstone, with internal insulation
Solid, insulated
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Boiler and underfloor heating, oil
From main system, plus solar
oil (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer and at least two room thermostats