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Expert Boiler & Plumbing Services in South Wales
TSL Heating & Plumbing has been delivering professional heating and plumbing services across South Wales for over 25 years. Our fully qualified engineers regularly attend training to maintain their expertise, ensuring we provide reliable, high-quality solutions to meet everyday domestic needs. As a Worcester Accredited Partner, we install A-rated boilers and offer up to 12 years of manufacturer-backed warranties, prioritising energy efficiency and long-term performance. Our services span new boiler installations, servicing, accessible bathroom adaptations, and comprehensive plumbing solutions. We operate across Cwmbran, Newport, Pontypool, Monmouthshire, Cardiff, Caerphilly, and Gwent, combining local knowledge with industry-leading standards.

Accredited by multiple trade bodies, we uphold professionalism and workmanship excellence in every project. Our finance options, including 0% interest plans, make upgrading heating systems accessible while maintaining transparency with no hidden fees. Customer satisfaction drives our reputation as South Wales' top-rated heating and plumbing specialists. We offer 24/7 emergency callbacks and a 14-day cooling-off period for finance agreements, ensuring client confidence. Backed by 5-star reviews, we provide free quotations and prioritise clear communication from initial enquiry to project completion.
Services
Boiler installation Boiler servicing Accessible bathrooms Plumbing services Boiler finance
Highlights and features
  • We offer 25+ years of plumbing and heating expertise
  • Our engineers are fully qualified and Gas Safe registered
  • We provide 0% interest boiler finance options
  • We are Worcester Accredited heating system partners
  • We serve customers across South Wales including Newport and Cardiff
What people say
Reliable service Professional engineers Excellent customer care Competitive pricing Prompt responses
Services
Boiler installation
We install high-efficiency A-rated boilers with up to 12 years manufacturer warranty. Our Gas Safe engineers ensure professional installation meeting UK safety standards. Worcester Accredited installations include energy-saving models that reduce household heating costs while maintaining reliability for long-term performance.
Boiler servicing
Regular boiler servicing maintains system efficiency and safety compliance. Our engineers perform comprehensive checks, cleaning components and identifying potential issues. Annual servicing helps prevent breakdowns and extends boiler lifespan while maintaining warranty validity through documented maintenance records.
Accessible bathrooms
We design and install accessible bathroom solutions for elderly and disabled users. Features include walk-in showers, grab rails, and level access installations. Our adaptations focus on safety, independence, and comfort while meeting building regulations and accessibility standards for improved daily living.
Plumbing services
Our comprehensive plumbing services cover repairs, installations, and emergency callouts. From leak detection to complete system upgrades, we handle domestic plumbing needs. We work with modern materials and techniques to ensure durable solutions for both traditional and contemporary properties across South Wales.
Boiler finance
We offer flexible boiler finance options including 0% interest plans. Customers can spread costs over 24-120 months with deposit options. Our finance partners provide transparent terms with clear repayment schedules, making heating upgrades accessible while maintaining competitive rates and straightforward application processes.
Questions
What boiler brands do you install?
We specialise in Worcester boilers as an accredited partner, offering A-rated models with 5-12 year warranties.
Do you offer emergency callouts?
Yes, we provide 24/7 emergency plumbing and heating services for urgent issues.
Are your engineers qualified?
All our engineers are fully qualified and Gas Safe registered for safety compliance.
What areas do you cover?
We serve Cwmbran, Newport, Cardiff, Pontypool, Monmouthshire, Caerphilly, and Gwent.
Can I finance a new boiler?
Yes, we offer 0% interest and flexible payment plans through Novuna Personal Finance.
Do you provide guarantees?
Most installations include 5-12 year manufacturer warranties with proper maintenance.
Reviews (6)
Derek Brindley
Jan 18, 2022 Report
Used this company for the first time as they were "Which" recommended. Appointment set up within 2 days, for a replacement kitchen monobloc tap and repair to a slow filling toilet cistern. Plumber Jake was a nice guy worked efficiently and left no mess. Will be using them in the future for boiler and gas fire annual servicing.
Elizabeth Hunt
Mar 10, 2021 Report
Received my reminder letter about my boiler service and then a follow up phone call (its been so busy teaching online in lockdown!). I was able to book my service on a convenient day the following week. The engineer called 10 mins prior to arrival so we could open the windows and clear the area. The service was carried out securely with the engineer wearing a mask. Paperwork was signed in a socially distanced manner and I called the office to pay over the phone. I received my receipt immediately by email. I will definitely use this company again.
Kevin Walley
Feb 14, 2021 Report
I have used tsl in the past to install and repair my boiler and have never been disappointed by service, price and expertness of the staff. Today i phoned them at 9 am and explained that my 90 year old mothers
boiler had stopped working , at this time of writing we are in a cold snap,
they were there by 12 and got it running, so thank you all at tsl. I spoke to my mother later and she was very impressed with the level of service, and as a pensioner was very happy with the bill
In 90 years i think she has come across more boiler company's than most of us but this is the one she was most impressed
Graeme Davies
Feb 09, 2021 Report
Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
Have just had a new boiler fitted. Very pleased with the service. From the initial quote through to completion of the work we felt the service was excellent.
Service:Heating system installation
James Coombes
Jun 23, 2020 Report
They converted a bathroom in to a wet room for my ageing uncle who cant walk well. Because of COVID restrictions I couldnt oversee the work but the company was amazing- very courteous and sensitive to my Uncle. The work was a high standard and done under the time.
Brilliant! I wish they worked in my area !
Margaret Parry
Nov 16, 2019 Report
So glad we found this firm. Having moved into our new house, weve needed work on plumbing, the WC, the boiler and a gas fire. Weve also had an emergency call out. Each time weve been extremely impressed with the standard of work, the knowledge & politeness of staff (both on the phone & in the home) and all done at a very reasonable price. The gas fire service engineer not only did that job but ensured we were aware of other potential related issues and even advised on the best apps for comparing gas tariffs! Highly recommended!