5 Kempton Close

What the assessor found

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

• Walls

  Cavity wall, as built, partial insulation (assumed)

  Average

• Roof

  Pitched, 250 mm loft insulation

  Good

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Programmer and room thermostat

  Average

• Hot water

  Electric immersion, standard tariff

  Very poor

• Lighting

  Low energy lighting in 50% of fixed outlets

  Good

The assessor's estimates at the energy prices in use when the certificate was made (2014), 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 £87 a year

   Rating after58D
2. 2

   Floor insulation

   Typical cost £800–£1,200 · saves about £42 a year

   Rating after61D
3. 3

   Add additional 80 mm jacket to hot water cylinder

   Typical cost £15–£30 · saves about £26 a year

   Rating after62D
4. 4

   Low energy lighting for all fixed outlets

   Typical cost £20 · saves about £13 a year

   Rating after63D
5. 5

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £78 a year

   Rating after68D
6. 6

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £97 a year

   Rating after73C
7. 7

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £9,000–£14,000 · saves about £231 a year

   Rating after87B
8. 8

   Wind turbine

   Typical cost £1,500–£4,000 · saves about £20 a year

   Rating after88B

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