Is your boiler in need of repair? Our boiler experts in Cowbridge have got you covered.

Our team of heating engineers provides boiler repairs for domestic and commercial clients across South Wales, offering you a complete and professional service at a competitive price.

Boiler Repairs In South Wales

We maintain and repair boilers, both condensing conventional gas boilers and condensing combination boilers, for clients across South Wales. Covering areas such as Cowbridge, Bridgend, Newport, Swansea and beyond, we provide our clients with a professional service. We offer a wide range of gas central heating systems to fit your property size and needs and pride ourselves on the quality of our work.

C S Boxall has all the necessary expertise to repair any domestic or commercial heating problems or malfunctions. We are reliable contractors with the ability to respond quickly when problems occur. We even an emergency call-out service, giving you peace of mind and the knowledge that essential heating repairs will be conducted by professional heating engineers with vast experience in servicing and repairing central heating boilers and appliances from all major manufacturers.

We are fully insured and are accredited installers for Worcester Bosch, providing a 5-year warranty on all Worcester Bosch installations. We also provide options to extend your warranty to up to 12 years. We are also assessed Gas Safe, as well as being members of Trustmark Installers who qualify commercial services & certification by technical abilities and audit them using proper working practices as endorsed by the government.

Our boiler repair services in South Wales include:

Repair and maintenance of condensing gas boilers
Supply and maintenance of oil tanks
Maintenance contracts for heating systems
Services to gas and LPG appliances
Oil or solid fuel boiler servicing
If your heating system becomes inefficient and repairs are needed on a more frequent basis, it may be more cost effective to fit a new system. We’re happy to provide details of the most popular commercial heating systems on the market and our plumbing, electrical and heating systems are fully guaranteed.

Areas Covered In South Wales

We repair 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
  • Caerphilly

Contact us today Book Your Boiler Installation

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24/7 Emergency Plumbing/Heating Emergency Callouts

Call us on
07590 350 650
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.


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.