Are you searching for reliable boiler installation in Swansea? At CS Boxall, our expert heating engineers specialise in fitting modern, energy-efficient boilers for both domestic and commercial properties across Swansea and the wider South Wales area.

We are a trusted and well-established company, known throughout Swansea for delivering high-quality boiler installation services tailored to each customer’s needs. Whether you need a new gas central heating system or a replacement boiler, our team will recommend the right solution for your home or business.

As accredited Worcester Bosch installers, we provide a 5-year warranty on all Worcester Bosch boilers as standard, with options to extend your warranty for up to 12 years. With CS Boxall, you can enjoy peace of mind, lower energy bills, and a reliable heating system built to last.

Boiler Installation in Cardiff and South Wales

We provide expert boiler installation in Swansea and across the surrounding South Wales areas, offering our clients a professional and comprehensive service at a competitive price. Whether you’re a homeowner or a business, our experienced Swansea heating engineers are here to help.

Our team installs both condensing conventional gas boilers and condensing combination boilers. For a single tap system, a condensing combination gas boiler provides hot water as you need it and as much or as little as you require, meaning that you don’t pay to heat water that won’t be used. The lack of necessity for a cylinder means these boilers are smaller than other alternatives, making them ideal for homes and businesses in Swansea where space is at a premium.

However, condensing combination boilers depend on the mains pressure, which does mean that they tend to have slower flow rates. For property owners and businesses looking for alternatives, we also supply, install, maintain and service all types of LPG boilers in Swansea.

We are fully insured and are accredited installers for Worcester Bosch, providing a 5-year warranty on all Worcester Bosch installations as standard, with the option to extend your warranty to up to 12 years. All of our gas boiler installations in Swansea are carried out by Gas Safe registered engineers, and as members of Trustmark Installers, our work is regularly assessed and certified for quality, safety and best practice.

GET IN TOUCH

We install boilers for domestic and commercial clients across South Wales. Some of the areas that our heating engineers frequently cover include:

  • Swansea
  • Cardiff
  • Vale of Glamorgan
  • Bridgend
  • Newport
  • Penarth
  • Porthcawl
  • Port Talbot
  • Caerphill

Our boiler repair services in South Wales include:

  • Rainwater harvesting
  • Radiators
  • Oil tanks
  • Pipe work
  • All types of boilers
  • Link up systems for gas, oil and solid-fuel
  • Underfloor heating systems
  • Renewable energy systems
  • All types of central heating systems
  • All types of burners and stoves
  • All electrical installations
FAQs

Frequently Asked Questions

 


 

What is the average cost to install a boiler?

A boiler replacement can cost in the region of about £2,000 to £5,000, depending on the type of boiler, installation complexity, and other work required.

 

How long does it take for a plumber to fit a new boiler?

A new boiler installation typically will take between 1 to 3 days, although it depends on how intensive the job might be; that could also vary if other work is included concurrently, such as an upgrade to a heating system. Call C.S. Boxall to schedule your installation.

 

Does the water get turned off when fitting a new boiler?

Yes, the water supply has to be turned off when laying a new boiler so that different connections in plumbing may be done without accidents and firmly connected in a way that won’t leak.

 

Why are boilers so expensive to install?

Boiler installation is an expensive process, not least because of the cost of boiler units but also their installation complexity and a need for professional expertise to ensure safe and effective operation. Please contact C.S. Boxall today for a full quote.

 

Could a plumber install a boiler?

Yes, a boiler can be installed by a qualified plumber or gas worker. But again, the training and experience are essential.

 

What factors should be considered when choosing a new boiler for installation?

A new boiler considers efficiency rating, size, combi or conventional, system or conventional, compatibility with your existing heating system, and most importantly, your budget. If you would like help with a boiler selection, please contact C.S. Boxall with your request.

 

Contact us today Book Your Boiler Installation

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Our testimonials

What our clients are saying

First time using CS Boxall. When I phoned, the office staff were so friendly and ready to help. They got me booked in quickly. When the engineer attend he was very polite and helpful and sorted the problem out. Would definitely recommend, a fabulous service.

Donna Thomas

Excellent company, I always have them for the annual boiler service which is very reasonable but more importantly they always assist with a problem. No hot water or heating last night, I left a voicemail and the engineer called at 8.15am and arrived at 10am, fault found and fixed. A big thanks to Alan for this and the office staff for sorting, would highly recommend CS Boxall

Heather J

Amazing service, fixed my broken washing machine pipe in no time and I got an apportionment straight away too. Will Definitely use again.

Hayley Smith

I must say that your boys and your team were absolutely fantastic in the quality of work, the organisation of trades were to super professional level.

You must be really proud.

Paul Smith

I would like to say thank you for the recent shower works carried out. We are so pleased. All aspects of the work were dealt with so professionally and at all times staff were so accommodating regarding dates /times etc.

Rhys was particularly helpful. Would highly recommend your company.

Amanda Drew

I would just like to send a huge message of thanks to your engineer who sorted out our Rayburn boiler/timer problem last Tuesday. Please tell him it’s working perfectly now and convey our gratitude to him for his perseverance .

Thanks to your company too for its excellent standards of workmanship and professionalism. We have used you for a while now and have been very impressed with your high levels of service.

Sally Moran

Just wanted to thank you for the fantastic work that was done in our house. Both men were extremely polite and hardworking and did a brilliant job. We are also very grateful for you coming out much earlier in order for us to have heating again.

Excellent Service. Thank you so much.

Sarah Harper

I just want to pass on my thanks and appreciation for the work that you have recently provided help to get our boiler / heating back up and running in the hospice.

I'm sure that you're very busy but i really value how responsive you've been to help us.

We're really grateful to be working with you and I'm sure it's the start of a successful partnership.

Jason

I would like to say a huge thank you to the lady who took my call yesterday and managed to get someone to us in minutes. To say yesterday was stress would be an understatement. The plumber that arrived was so calm and collected and I just wanted to thank the company so much and apologise for my highly emotional state. No one ever expects to open their front door and be faced with that and especially so close to Christmas... on the day you are due to exchange on the house!

Thanks again and we will be recommending you to everyone!!!

Beca Griffiths

Can I please also pay a compliment to David for his outstanding work yesterday and thank you all for getting the heating working much sooner than I'd anticipated.

Jon Taylor

I wanted to say once again how helpful the two men were. They answered all my questions and were just very considerate.

I have been so pleased with your company and would highly recommend you.

Clare Hockings

I would like to thank you for the installation job last Thursday. Your men did a great job. Mine is not an easy property to work on or in and they were efficient and professional and very prompt in their timing of the work in spite of all.

They also did go above and beyond with details and did not treat me like a lamebrain civilian which made a change.

Judith Browne
Our credentials

We’re accredited

To ensure our customers receive a high standard of workmanship, experience is accredited and monitored by several trade industry bodies.