England and Wales: 1930-1949
none of the above
Waliau ceudod, fel yGÇÖu hadeiladwyd, dim inswleiddio (rhagdybiaeth)
Solet, dim inswleiddio (rhagdybiaeth)
Goleuadau ynni-isel mewn 45% oGÇÖr mannau gosod
Ar oleddf, 50 mm o inswleiddio yn y llofft
Bwyler a rheiddiaduron, nwy prif gyflenwad
OGÇÖr brif system
mains gas (not community)
Gwresogyddion ystafell, logiau coed
Gwydrau dwbl llawn
double glazing installed before 2002
Rhaglennydd, TRVs a falf osgoi
none of the above
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 27% of fixed outlets
Pitched, 50 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, dual fuel (mineral and wood)
Fully double glazed
double glazing installed before 2002
Programmer, no room thermostat