England and Wales: 1900-1929
rental (private)
Cavity wall, as built, no insulation (assumed)
(other premises below)
No low energy lighting
Pitched, no insulation (assumed)
No system present: electric heaters assumed
Gas multipoint
To be used only when there is no heating/hot-water system
Fully double glazed
double glazing installed before 2002
rental
Cavity wall, as built, no insulation (assumed)
(other premises below)
Low energy lighting in all fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, TRVs and bypass