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Installing and servicing boilers in Hampshire

at diamond gas and heating, the customer is at the heart of everything we do. we are a family-run business with specialist worcester bosch accredited, gas safe registered installers. we offer top-quality boiler services, repairs and installations to portsmouth, fareham, gosport, southampton and all surrounding areas.

Our Services

We are a Worcester Bosch Accredited Installer

With that come great benefits to you

  • Up to 12 years guarantee on Worcester Bosch gas boilers***
  • All installs include a system filter and inline scale filter
  • Our engineers are Worcester trained
  • Finance options available
  • All premium options include a NEST smart thermostat

1元能入场的炸金花游戏how much a new boiler could cost you? it’s less than you think.


Choose how you want to finance your boiler

Includes a new top of the range Worcester Bosch boiler, controls and installation

Yours and fitted from* 1,695 Includes VAT
  • From 2 - 10 years finance options
  • 0% APR spread the cost with 24 equal monthly payments interest free
  • Buy now and pay later
Find out how finance could help you

Reassurance from just
£6 per month

when it comes to boilers and central heating, peace of mind is the most important thing we can offer. that’s why our four-tiered care plan system is great. it means you can rest easy knowing you’ll be looked after when you need it most.

Why choose
Diamond Gas and Heating?

  • Quality-rated boilers

    1元能入场的炸金花游戏all of our boilers 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

    1元能入场的炸金花游戏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

    all of our engineers are gas safe registered and follow strict practice guidelines.

A family business

When husband and wife Ian and Louise Simm launched Diamond Gas & Heating in 2011, they knew they could offer something better than the local competition.

The pair had military backgrounds, each serving in the Royal Navy, with a combined service of 28 years. Ian had been an engineer and Louise in communications.

With their combined skills and background, the team knew they could offer the competitive prices of a local gas fitter, without compromising on quality and customer service –  all while offering 24/7 call-outs and complete peace of mind for the customer – something that truly sets them apart from the rest.

Ian Simm


Louise Simm


Amy Long

Customer Service
Find out More