30 Wolverton 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, 300+ mm loft insulation

  Very good

• Floor

  Solid, 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, 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 (2013), 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 £268 a year

   Rating after56D
2. 2

   Floor insulation

   Typical cost £800–£1,200 · saves about £46 a year

   Rating after59D
3. 3

   Low energy lighting for all fixed outlets

   Typical cost £25 · saves about £14 a year

   Rating after59D
4. 4

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,000 · saves about £119 a year

   Rating after67D
5. 5

   Solar water heating

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

   Rating after69C
6. 6

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £9,000–£14,000 · saves about £226 a year

   Rating after82B
7. 7

   Wind turbine

   Typical cost £1,500–£4,000 · saves about £19 a year

   Rating after83B

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