The difference we deliver
Vaillant approved installation specialists
Accredited to install Vaillant boilers in line with manufacturer standards.
Gas Safe registered 539111 engineers
Qualified professionals carrying out boiler work safely and legally.
A new boiler that keeps your home running properly
Old boilers have a habit of picking the worst possible moment to give up, usually when you need heating or hot water most. We provide boiler installation, fitting energy-efficient systems that are suited to the size of your property and household requirements.
That includes combi boilers, conventional boilers, and system boilers, which our Gas Safe-registered team installs. We've been carrying out boiler installations since 2008, and STH Plumbing & Heating Ltd has built a strong local reputation for quality workmanship. When your current system is becoming costly to maintain, we'll provide straightforward recommendations and a free quote.
Real feedback from real customers
Yell
We had our bathroom completely ripped out & renovated from scratch. It took 2 weeks, and it is an absolutely outstanding job! Chris, Mark & Craig did the most professional work we’ve ever had done! They were spot on from day 1 with updates on the work & keeping us informed daily on who would be doing what next. They were all so professional & very respectful of us & our home. We highly recommend them & will be more than happy to use them again in the future. Thanks so much to Chris & his team for an amazing job. 🙏
Yell
Chris and Max arrived on time and were really pleasant and helpful. A great job done, clean and efficient. I have found my forever plumber x
Installed with the right setup from the start
Our Vaillant Approved status allows us to install trusted heating systems backed by 7 or 10-year manufacturer warranties, giving you valuable long-term reassurance. STH Plumbing & Heating Ltd also provides a 12-month workmanship guarantee on every installation.
Before recommending a replacement, we assess your existing heating arrangement, hot water demands, and available space to ensure the new system is suitable for the property. This careful approach helps homeowners invest in a solution that will perform effectively for years to come.
Frequently asked questions
Why replacing an ageing boiler makes sense
Modern boilers are designed to operate more efficiently, helping reduce unnecessary energy consumption and improve overall heating performance. Updated controls can make it easier to manage temperatures throughout the home and tailor heating schedules to your daily routine. Replacing an older system can also provide greater peace of mind, particularly when recurring repairs are becoming more frequent. A professionally installed boiler is an investment in comfort, convenience, and the long-term performance of your heating system.