4 Cornfield Road

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, 50 mm loft insulation

  Poor

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Programmer, room thermostat and TRVs

  Good

• Hot water

  From main system

  Average

• 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

   Increase loft insulation to 270 mm

   Typical cost £100–£350 · saves about £43 a year

   Rating after54E
2. 2

   Cavity wall insulation

   Typical cost £500–£1,500 · saves about £170 a year

   Rating after62D
3. 3

   Floor insulation

   Typical cost £800–£1,200 · saves about £47 a year

   Rating after65D
4. 4

   Draught proof single-glazed windows

   Typical cost £80–£120 · saves about £32 a year

   Rating after66D
5. 5

   Low energy lighting for all fixed outlets

   Typical cost £65 · saves about £39 a year

   Rating after68D
6. 6

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £140 a year

   Rating after74C
7. 7

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £25 a year

   Rating after75C
8. 8

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £9,000–£14,000 · saves about £226 a year

   Rating after86B

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