4 Bedfont Close

What the assessor found

Each part of the home, with the certificate's own energy efficiency rating.

• Walls

  Cavity wall, as built, no insulation (assumed)

  Poor

• Roof

  Pitched, no insulation (assumed)

  Very poor

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Heating

  Boiler and radiators, LPG

  Poor

• Heating controls

  Programmer, room thermostat and TRVs

  Good

• Hot water

  From main system

  Poor

• Lighting

  No low energy lighting

  Very poor

The assessor's estimates at the energy prices in use when the certificate was made (2013), for a typical household. Today's bills will differ.

Improvements the certificate recommends

In the certificate's order. Each rating assumes the steps before it are done.

1. 1

   Cavity wall insulation

   Typical cost £500–£1,500 · saves about £223 a year

   Rating after45E
2. 2

   Floor insulation

   Typical cost £800–£1,200 · saves about £83 a year

   Rating after48E
3. 3

   Low energy lighting for all fixed outlets

   Typical cost £60 · saves about £34 a year

   Rating after50E
4. 4

   Change heating to gas condensing boiler

   Typical cost £3,000–£7,000 · saves about £623 a year

   Rating after70C
5. 5

   Flue gas heat recovery in conjunction with boiler

   Typical cost £900 · saves about £22 a year

   Rating after71C
6. 6

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £9,000–£14,000 · saves about £243 a year

   Rating after81B
7. 7

   Wind turbine

   Typical cost £1,500–£4,000 · saves about £83 a year

   Rating after85B

Costs and savings are the certificate's own, as estimated when it was made.