Installing and servicing boilers in South East England
At Diamond Gas & 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
Boilers and Heating
Servicing and RepairsWe 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 smart thermostat
How much a new boiler could cost you? It’s less than you think.
Start your boiler quote
Choose how you want to finance your boiler
Includes a new top of the range Worcester Bosch boiler, controls and installation
- From 2 - 10 years finance options
- 0% APR spread the cost with 24 equal monthly payments interest free
Reassurance from just
£7.50 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
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
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
Director
Louise Simm
DirectorWhat our customers think of
Diamond Gas and Heating
Diamond gas were quick and professional…
Diamond gas were quick and professional when installing a new boiler within a few days when the snow hit and we were without heating and hot water. Very fair quote. Would highly recommend.
A service to match their company name
Excellent, very professional and a value-for-money service. I would recommend Diamond to anyone.
Brilliant service
The communication and service provided by the whole team is second to none. They go the extra mile to provide this excellent service. Mum has a Gold service contract and it has been worth every penny. Thanks Diamond.
Proven service and trusted amongst our customers.
Start your boiler quote