20 Coombe 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, 250 mm loft insulation

  Good

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Room thermostat only

  Poor

• Hot water

  From main system

  Good

• Lighting

  Low energy lighting in 80% of fixed outlets

  Very 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

   50 mm internal or external wall insulation

   Typical cost £4,000–£14,000 · saves about £232 a year

   Rating after73C
2. 2

   Floor insulation

   Typical cost £800–£1,200 · saves about £45 a year

   Rating after74C
3. 3

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £92 a year

   Rating after78C
4. 4

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £41 a year

   Rating after79C
5. 5

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £9,000–£14,000 · saves about £261 a year

   Rating after89B

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