Fast response. Honest advice. Fixed properly.
Boiler Repairs You Can Rely On
A broken boiler can cause serious disruption—but we’re here to help get things sorted quickly and safely. With over 20 years’ experience in boiler repairs, we’ve seen it all—and fixed it all.
System Flushing – Only When It’s Truly Needed
Circulation problems aren’t always caused by a dirty system—and we’ll never recommend a power flush unless it’s genuinely necessary.
A failing pump
A localised blockage
An incorrectly configured system
No unnecessary work
No hidden charges
Always honest advice
Expert Fault Diagnosis & Honest Solutions
We don't just fix the symptoms—we get to the root of the problem. With two decades of hands-on experience, we can quickly identify faults and recommend the most cost-effective, long-term solution.

As a
Gas Safe Registered engineer, your safety and peace of mind are our top priority. Every repair is carried out to the highest standards, with full attention to detail and system integrity.
See what our customers say
Talk about service with a smile! We used Sam and his team to install a new boiler and underfloor heating in our renovation. In addition he has fitted a gas cooker and carried out the annual services. Every time it has been a pleasure to deal with Sam and the team, they arrive on time and are super efficient - HIGHLY RECOMMENDED
Write your caption hereJo & Mark, Sandilands Cottages-
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We have used Sam Rainbow Heating several times, they offer an extremely prompt service from quote to completion of the job... we would highly recommend their work.
Mark & Tracy, Abergynolwyn -
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Power flushing my heating system was required, after contacting Sam, this was performed quickly and efficiently. The price was very reasonable. I would recommend their services to anyone with plumbing problems. Thank you very much, my issues are now solved!
Robert - Tywyn
