22 Orwell Close

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, 25 mm loft insulation

  Poor

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Windows

  Fully double glazed

  Average

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Programmer, no room thermostat

  Very poor

• Hot water

  From main system

  Good

• Lighting

  Low energy lighting in 33% of fixed outlets

  Average

• 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 (2021), 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 £78 a year

   Rating after53E
2. 2

   Cavity wall insulation

   Typical cost £500–£1,500 · saves about £142 a year

   Rating after60D
3. 3

   Party wall insulation

   Typical cost £300–£600 · saves about £34 a year

   Rating after61D
4. 4

   Floor insulation (solid floor)

   Typical cost £4,000–£6,000 · saves about £47 a year

   Rating after63D
5. 5

   Low energy lighting for all fixed outlets

   Typical cost £30 · saves about £34 a year

   Rating after64D
6. 6

   Upgrade heating controls

   Typical cost £350–£450 · saves about £89 a year

   Rating after69C
7. 7

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £66 a year

   Rating after72C
8. 8

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £29 a year

   Rating after73C
9. 9

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £3,500–£5,500 · saves about £331 a year

   Rating after84B

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