16 Rockingham Close

What the assessor found

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

• Walls

  Solid brick, with external insulation

  Good

• Roof

  Pitched, 100 mm loft insulation

  Average

• Floor

  Suspended, no insulation (assumed)

  Not rated on the certificate

• Windows

  Fully double glazed

  Average

• 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 40% 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 (2015), 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 £22 a year

   Rating after62D
2. 2

   Increase hot water cylinder insulation

   Typical cost £15–£30 · saves about £21 a year

   Rating after63D
3. 3

   Low energy lighting for all fixed outlets

   Typical cost £15 · saves about £15 a year

   Rating after64D
4. 4

   Solar water heating

   Typical cost £4,000–£6,000 · saves about £44 a year

   Rating after67D
5. 5

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £5,000–£8,000 · saves about £272 a year

   Rating after82B

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