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Working for you

Since starting in 2011 with just Ian, Louise and apprentice Bradley, Diamond Heating & Cooling now boasts a team of eight. Each of the firm’s Gas Safe registered engineers has been trained by Ian with customer focus and quality workmanship at front of mind. The company is also a member of Check-a-Trade and a selected Which? Trusted Trader.

At Diamond Heating & Cooling the customer is everything. From our family to yours – the team will be with you every step of the way to ensure your boiler installation is as smooth, straightforward and simple as it can be.

And with our Warmcare packages, you can rest easy knowing you’re protected if anything goes wrong.

Why choose
Diamond Heating & Cooling?

  • Quality-rated products

    All of our boilers and air con units come with a manufacturer-backed guarantee and are Which? Best-Buy rated.

  • Honest and accurate pricing

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

  • Warmcare packages

    We offer flexible and scalable packages to suit your needs, ensuring you feel safe and secure in the knowledge that you are protected from boiler breakages and shutdowns.

  • Friendly professional service

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

Quality Steps of
Diamond Heating & Cooling


Initial survey and pre-installation

  • One of our experienced surveyors and engineer will survey your property and carry out a pre-installation check to assess your needs.
  • Once this has been done, you will be emailed a quote.
  • We will then follow up with a call to see if you have any questions. If you are happy with the quote, we’ll book you in.
  • At any time prior to the installation, our friendly team will be on hand to answer any questions you might have.
  • Please note that our surveyors are fully qualified engineers, not salesmen. At Diamond Gas & Heating you’ll never experience pressure selling. We just don’t operate like that.

Professional Installation

  • One of our engineers will attend the property and go through a commencement check. This details the process, and ensures that you’re happy for us to proceed.
  • The engineer will then install your new appliance, and will keep you informed throughout so you know exactly what is happening.
  • Once installed, the engineer will take you through the controls and ensure that you understand how to operate the controls and thermostat.
  • The engineer will then complete with you a completion certificate to ensure that you are happy with the finished job.
  • It is our policy that our engineers clean up after themselves, so we leave a property just as we found it


  • Once installed, the aftercare team will register your new appliance with Gas Safe or F-Gas and the manufacturer to activate your guarantee.
  • If you’ve signed up to Warmcare, your plan is now activated and should anything go wrong, we’re here, with all the benefits offered.
  • We will remind you when your annual service is due, ensuring your system is maintained. (See Diamond Warmcare packages for further information).
  • Your installation is under warranty for up to 12 years, making sure your home is fully protected.


How much could a new boiler cost? It’s less than you think.

Start your boiler quote

Meet the Team

Ian Simm


Louise Simm


Steve Bell

Technical Manager
View more team members