4 Edison Road

What the assessor found

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

• Walls

  Solid brick, as built, no insulation (assumed)

  Very poor

• Roof

  Pitched, 75 mm loft insulation

  Average

• Floor

  Suspended, 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

  Good

• Lighting

  Low energy lighting in 67% of fixed outlets

  Good

• Second heating

  Room heaters, smokeless fuel

  Not rated on the certificate

The assessor's estimates at the energy prices in use when the certificate was made (2011), 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–?300 · saves about £46 a year

   Rating after56D
2. 2

   Low energy lighting for all fixed outlets

   Typical cost ?8 · saves about £13 a year

   Rating after57D
3. 3

   Solar water heating

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

   Rating after58D
4. 4

   50 mm internal or external wall insulation

   Typical cost ?5,500–?14,500 · saves about £123 a year

   Rating after64D
5. 5

   Solar photovoltaic panels, 2.5 kWp

   Typical cost ?11,000–?20,000 · saves about £214 a year

   Rating after73C

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