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A family business

Husband and wife Ian and Louise Simm launched Diamond Gas & Heating in 2011. They believed in a trade renown for poor service and communication, they could do better.

The company has grown and over the years and matured into Diamond Heating & Cooling and now Diamond Green Energy. Ian and Louise son and daughter have now both joined the family company.

Photo of Ian Simm
Photo of Louise Simm
Photo of Steve Davis
Photo of Steve Bell
Photo of Drew Bincham
Photo of Matt Simm
Photo of Jake Barnes
Photo of Steve Barnes
Diamond Green Energy Icon Diamond Green Energy Diamond graphic Diamond Green Energy Diamond graphic Diamond Green Energy Icon

Our Values

Professional standards

Respectful of your home

Informative experts

Dedicated team

Efficient processes

Why choose us?

Quality products

We always offer products of the highest quality. Our products are picked on build quality and reliability.

Honest pricing

We provide fast and accurate quotations with no hidden fees or costs.

Care packages

We offer flexible and scalable packages to suit your needs.

Friendly & professional

Our engineers are Gas Safe and F-Gas registered, they follow strict practice guidelines.

How it works

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You answer

Answer a few quick questions to get an online estimate in seconds, including installation options and product details

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You pick

Our team will arrange a free, no obligation, home assessment at a time that suits you with one of our trained engineers to discuss which installation options will best suit you and your home.

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We install

Our experienced installation team will arrive at a date and time that suits you and will look after your installation from start to finish.

Ready? Find the perfect solution for you.

Or, if you prefer to talk to a human feel free to call us on 0330 818 8529