15 Caithness 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, 50 mm loft insulation

  Poor

• Floor

  Solid, no insulation (assumed)

  Not rated on the certificate

• Windows

  Fully double glazed

  Poor

• Heating

  Boiler and radiators, mains gas

  Good

• Heating controls

  Programmer, no room thermostat

  Very poor

• Hot water

  From main system, no cylinder thermostat

  Poor

• Lighting

  Below average lighting efficiency

  Poor

The assessor's estimates at the energy prices in use when the certificate was made (2026), 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 £900–£1,200 · saves about £64 a year

   Rating after46E
2. 2

   Cavity wall insulation

   Typical cost £900–£1,500 · saves about £215 a year

   Rating after53E
3. 3

   Floor insulation (solid floor)

   Typical cost £5,000–£10,000 · saves about £66 a year

   Rating after54E
4. 4

   Insulate hot water cylinder with 80 mm jacket

   Typical cost £20–£40 · saves about £270 a year

   Rating after62D
5. 5

   Low energy lighting for all fixed outlets

   Typical cost £60–£70 · saves about £17 a year

   Rating after63D
6. 6

   Hot water cylinder thermostat

   Typical cost £130–£180 · saves about £49 a year

   Rating after64D
7. 7

   Upgrade heating controls

   Typical cost £220–£250 · saves about £149 a year

   Rating after69C
8. 8

   Replace boiler with new condensing boiler

   Typical cost £2,200–£3,500 · saves about £136 a year

   Rating after73C
9. 9

   Solar photovoltaic panels, 2.5 kWp

   Typical cost £8,000–£10,000 · saves about £182 a year

   Rating after78C

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