Green Deal

See how you could save on energy with a Green Deal assessment for £129.

What's Green Deal?

Green Deal is a Government scheme to help you make your home more energy efficient.

How does it work?

Step 1

To start, your home will need a Green Deal assessment. It’ll take about two hours, and costs £129. The Green Deal assessor will look into how energy efficient your home already is, and how everyone in your home uses energy.

Step 2

From this, you’ll get a Green Deal advice report which shows you what improvements you could make for a more efficient home. You’ll also get an Energy Performance Certificate showing the energy rating of your home - that’s valid for 10 years.

Step 3

Based on your Green Deal advice report, we’ll take you through what improvements we can make and how much it will cost. Once you’ve decided on what you want, a Green Deal professional will carry out all the work.

Is Green Deal right for you?

  • Get expert advice from a certified Green Deal advisor.
  • Know that everything’s been fitted properly by a Green Deal professional.

What improvements can I make with Green Deal?


Uninsulated homes lose heat through the walls, roof and floors. With things like loft and cavity wall insulation, you can cut down the amount of heat you lose. Keeping the heat in means you won’t need to spend so much trying to warm your house up.

  • Cavity wall insulation
  • Draught proofing
  • Duct insulation
  • External wall insulation
  • High performance external doors
  • Internal wall insulation
  • Loft or rafter insulation
  • Mechanical ventilation with heat recovery
  • Pipework insulation
  • Replacement glazing
  • Roof insulation
  • Attic insulation
  • Sealing improvements (including duct sealing)
  • Secondary glazing
  • Underfloor insulation


Your heating system might not be working as efficiently as it could be – particularly if you’ve had it a while. Your Green Deal advice report will show you the savings you could make by upgrading the way you heat your home and water.

  • Air source heat pumps
  • Biomass boilers
  • Biomass room heaters
  • Cylinder thermostat
  • Fan assisted replacement storage heaters
  • Flue gas heat recovery devices
  • Gas fired condensing boilers
  • Ground source heat pumps
  • Heating controls
  • Hot water controls
  • Hot water cylinder insulation
  • Hot water showers, taps, systems
  • Oil fired condensing boilers
  • Radiant heating
  • Solar water heating
  • Under floor heating
  • Warm air units
  • Waste water heat recovery devices
  • Water source heat pumps


Once your home is as efficient as it can be, you can also make changes to your electricity to cut your bills.

  • Changing your lighting systems, fittings and controls
  • Micro combined heat and power
  • Wind power
  • Solar energy

Terms & conditions

* British Gas Green Deal Assessment.pdf
Green Deal assessments on domestic properties (.pdf 466kB)

We're here to help

Frequently asked questions

Q. How do I get a Green Deal?

A: First, you need to book an assessment with a Green Deal assessor. They’ll survey your house and collect information on how you use energy to see where you could make changes. After this, you’ll get a Green Deal advice report, which will recommend what you could install to become more efficient. You can take this report to a Green Deal installer to get a quote for the work.

Q. Why should I make my property more energy efficient?

A: If you use less energy, you’ll save money on your bills. And you’ll be doing your bit for the environment, too.