21 Heaton Close

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, 200 mm loft insulation

  Good

• Floor

  Suspended, no insulation (assumed)

  Not rated on the certificate

• Windows

  Fully double glazed

  Good

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Programmer and room thermostat

  Average

• Hot water

  From main system, no cylinder thermostat

  Poor

• Lighting

  Low energy lighting in 50% of fixed outlets

  Good

• Second heating

  Room heaters, mains gas

  Not rated on the certificate

The assessor's estimates at the energy prices in use when the certificate was made (2022), 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 £35 a year

   Rating after57D
2. 2

   50 mm internal or external wall insulation

   Typical cost £4,000–£14,000 · saves about £103 a year

   Rating after62D
3. 3

   Floor insulation (suspended floor)

   Typical cost £800–£1,200 · saves about £41 a year

   Rating after64D
4. 4

   Low energy lighting for all fixed outlets

   Typical cost £35 · saves about £33 a year

   Rating after65D
5. 5

   Hot water cylinder thermostat

   Typical cost £200–£400 · saves about £66 a year

   Rating after68D
6. 6

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £151 a year

   Rating after75C
7. 7

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £35 a year

   Rating after77C
8. 8

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £3,500–£5,500 · saves about £373 a year

   Rating after88B

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