yes got all that
FeatureDescriptionRatingWallCavity wall, as built,poor no insulation (assumed)
RoofPitched, 200 mm loft insulation good
WindowFully double glazedAverage
Main heatingBoiler and radiators, mains gasGood
Main heating controlProgrammer, room thermostat and TRVsGood
Hot waterFrom main systemGood
LightingLow energy lighting in all fixed outletsVery good
FloorSuspended, no insulation (assumed)
N/ASecondary heatingRoom heaters, electricN/A
Step 1: Cavity wall insulation
Cavity wall insulation
Typical installation cost
£500 - £1,500
Typical yearly saving
£76
Potential rating after completing step 1
70 | C
Step 2: Floor insulation (suspended floor)
Floor insulation (suspended floor)
Typical installation cost
£800 - £1,200
Typical yearly saving
£40
Potential rating after completing steps 1 and 2
72 | C
Step 3: Solar water heating
Solar water heating
Typical installation cost
£4,000 - £6,000
Typical yearly saving
£24
Potential rating after completing steps 1 to 3
73 | C
Step 4: Solar photovoltaic panels, 2.5 kWp
Solar photovoltaic panels
Typical installation cost
£3,500 - £5,500
Typical yearly saving
£352
Potential rating after completing steps 1 to 4