“Jack arrived the following morning at agreed time.” · Which? Trusted Traders, 31 Mar 2021
“They arrived on time” · Which? Trusted Traders, 24 Dec 2020
“They are very responsive, punctual” · Which? Trusted Traders, 29 Apr 2020
Public evidence profile · Checked June 2026
How this score is made up
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
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Recurring themes from 25 customer reviews on Which? Trusted Traders.
Customers who keep coming back: “Have had boiler serviced with them for several years.” · Which? Trusted Traders, 16 Nov 2024
Respectful and tidy in your home: “They are very clean and tidy” · Which? Trusted Traders, 29 Apr 2020
“Jack arrived the following morning at agreed time.” · Which? Trusted Traders, 31 Mar 2021
“They arrived on time” · Which? Trusted Traders, 24 Dec 2020
“They are very responsive, punctual” · Which? Trusted Traders, 29 Apr 2020
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.
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These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.
These are the individual reviews we hold for HeatGlow Heating and Plumbing, including the highlights above. The 35 headline total is the review volume reported across public review sources.
Good work, unclear value for money
Have had boiler serviced with them for several years. They attended to fix a part on the boiler this week, quoted a price and fixed it the same day. Good service. However, when asked for an invoice detailing parts and labour cost, which we need for any potential insurance claim, they refused. Apparently, company policy just to put 'repair boiler and replace fan' and a grand total. Nothing else. As a result, it's not clear to us whether the 10% discount for being a "Heatshield" member has been included. Nor whether the free call out we should have been entitled to has been taken off the total either. First time I've ever come across a refusal to detail an invoice for parts and labour. Despite several emails politely requesting the above, still no joy. Shame as the company has always been very good. Strange not to show full transparency on costs, especially when they're plumbing work has been so good. We didn't dispute the bill, we just wanted a simple two item breakdown on an invoice. We are now unable to judge whether the service good value or not. Really disappointed. To be clear, I would recommend their work, but would strongly suggest others ask for a quote with a breakdown of costs in writing ahead of agreeing to any work, in order to judge if it is good value for money.
Work completed:
Professional & Polite
Our heating system (installed 37 years ago) had died. We looked on Which Trusted Traders website for a local company and HeatGlow were exemplary. The initial survey by Gareth showed what needed to be replaced (i.e. everything apart from the radiators and pipework which they were able to save with some TLC and a flush through). They turned up as promised and installed a new Worcester Bosch boiler, replaced the hot-water cylinder and installed a header tank plus the flush through in 4 days and charged exactly as per their quotation. All of their people were very polite, considerate and tidied up afterwards. Strongly recommended.
Work completed:
Hot water returns!
Returned from holiday on a Friday to find our 14-year-old gas boiler in its death throes. By Sunday it was no more! Contact via email that night and they managed to fit us in due to a cancelled appointment the next day. Very thorough in the diagnosis of the problem (broken valve). Part ordered and fitted 48 hours later. The boiler is back to full function and with a new PCB board and electrodes 2 years ago should run for a while yet. Hopefully! Very happy with the service and professionalism. No mess or damage to the surrounding kitchen, unlike the previous gas-fitter. I will be returning to them for my gas and plumbing needs.
Work completed:
Fast and competent
Contacted the firm Monday afternoon. Jack arrived the following morning at agreed time. The issue was the pressure in the boiler which was erratic and various issues had to be ruled out. Also it’d been leaking water which Welsh Water weren’t too happy about. Jack was helpful in that score as well checking throughout the house for leaks and stabilising the boiler. This is a small but customer focussed company with a great ethos. Thank you folks.
Work completed:
Definitely to be ‘Trusted’
I usually have my boiler serviced by the company who installed it (back in 2007). However, due to Covid, they were unavailable and so, I looked up Trusted Traders reviews. It was so easy to book an appointment online (which was within a few days) and received several communications with confirmation and updates as to the appointment. They arrived on time, were polite, took off their shoes ( wasn’t necessary, but noted and appreciated). I informed them of ongoing issues (losing pressure frequently and a little leak from bathroom towel radiator). No leak since and pressure issue is looking good. Thank you Heatglow - you’ve got it nailed in my view!!! It’s left me with conflicting feelings. I still trust the original company, but I am impressed and very happy with Heatglow’s service from beginning to end..... whilst I don’t have a ‘relationship’ with them (I know them/they know me type of thing), I am converted!!
Work completed:
Excellent company
I found HeatGlow on the Which trusted traders site. Booked a boiler service via their web site - it was very straightforward and I was able to book a time and date for the visit. The price was even less than what I had paid 3 years previously with another firm. From then on I received both emails and messages with my invoice and confirmation of date/time including the name of 5he engineer carrying out the work. Everything completed on time and certificate issued electronically. Every aspect of dealing with HeatGlow was excellent and I would certainly use and recommend to everyone.
Work completed:
Good job
Heatglow installed a new Worcester Bosch boiler, replaced two radiators and fitted a new electric shower in one day as promised. They gave me good advice when then visited to quote for the work and provided a competitive price. They were helpful, friendly and easy to deal with. I will definitely use them again.
Work completed:
Excellent work
Excellent service. I had 2 radiators changed. I bought my own radiators and valves and Heatglow had them changed. Very efficient, quick, left all clean and did a very good job. Really well done. Booking was easy via email and price competitive.
Work completed:
Emergency Boiler Installation
The guys responded to an urgent request promptly and scheduled in the work whilst agreeing to honour a much earlier quote. On the day, they worked professionally, demonstrating excellent social distancing disciplines. They communicated well throughout. Given that carpets and floorboards were lifted you would not have noticed if you hadn't seen it due to their commitment to putting everything back in its place and cleaning up after themselves. The new boiler was fitted with the minimum of fuss despite having to work around the challenges of an old house. We will certainly use their services again and have no hesitation in recommending them to others.
Work completed:
Regular service plus other plumping work including changing radiators and tap repairs
I have used Gareth and Tom for a number of years and have recommended them to numerous friends and Neighbours. They are very responsive, punctual and extremely polite. Their annual service is very thorough and much better than the very large national company we used to use. All work is explained and carried out as per explanation. They are very clean and tidy and one they leave the property you do not know they have been there. Am excellent example of a Local business serving the local community and with the added benefit of being Welsh speaking.
Work completed:
Courteous, effective, punctual. Gwasanaeth arbennig.
Wedi defnyddio Gareth a Tom ar sawl achlysur bellach a'r un ydi'r profiad bob tro; maent yn brydlon ac yn effeithiol ac yn cyfrathebu'n dda iawn. Wedi argymell gwasanaeth Heatglow i sawl un ac yn barod iawn i wneud hynny. Have used Gareth and Tom on a number of occasions and they're always punctual, effective and with great communication. Have recommended Heatglow to others without hesitation.
Work completed:
Excellent service
Tom and Gareth have carried out gas safety checks, servicing and repairs on my behalf and I can’t recommend them enough. Their service is seamless - from initial call, scheduling and pricing through to completion of works and invoicing. They’re responsive, efficient and totally reliable. Don’t look anywhere else! ⭐️ ⭐️ ⭐️ ⭐️⭐️
Work completed:
Excellent service and quality of work
Over the last 3 years Gareth and Tom at Heatglow have installed my home combi boilers, underfloor heating and new radiators. On top of this scheduled work they have responded to call outs for frozen pipes etc. Not only is there service excellent, the quality of work has been outstanding. Additionally, they are very careful and respectful. It is not often that rooms are left tidier after a callout than they were before.
Work completed:
Gwasanaeth o safon bob amser/Always great service
Mae Gareth a Tom yn gofalu amdanon ni ers blynyddoedd, popeth o service blynyddol y tân nwy i osod bwyler newydd yn ddiweddar ar ôl i'r hen un ddod i ddiwedd ei oes. Gallwch chi ddibynnu ar Heatglow i fod yn brydlon, egluro beth sy o'i le, sut i gywiro pethau a gwneud eu gwaith yn lân heb ffwdan. Gareth and Tom have been looking after our plumbing for years now, from annual gas fire services to replacing the boiler recently when the old one ran out of steam. You can rely on Heatglow to be prompt, explain what's what, how things need to be to fixed and then get the work done efficiently with no mess.
Work completed:
Excellent, quick service.
Tom from Heatglow carries out an annual boiler service and checks out any other issues I have in my home. Always a quick response when booking the service and the work carried out when promised in a friendly manner. Strongly recommend.
Work completed:
Follow up service
We have used HeatGlow for several years. Initially they provided an excellent repair service for our existing boiler, and have since recommended and installed a new one for which they provide an annual service. A very reliable company who respond promptly to calls, and are prepared to work on the weekend.
Work completed:
New boiler and thermostat
Tenants at a rented property were left without hot water when an old boiler broke down. Heatglow replaced the boiler within days. They were professional, communicated the options well and once I decided on the best option got to work straight away. This was 18 months ago and we haven't had any issues with the new boiler.
Work completed:
Professional, high quality work.
We have used HeatGlow with Gareth and the Team on numerous occasions. They are always punctual, helpful and very professional in all of the work they carry out. All work is quoted for to ensure that there are no hidden costs and always completed to a very high standard. They have completed various jobs including relocating radiators and pipework, servicing boiler, fixing a leak and plumbing in of appliances. We will certainly be using them in the future and would definitely recommend their work and customer service. Diolch.
Work completed:
Totally reliable & professional
We have been using Gareth & Tom for over 5 yrs since Gareth did all the plumbing work for our bathroom. He did an excellent job and since then, he or Tom, comes to service our gas fire and boiler annually. HeatGlow are our go-to guys and I have recommended them to friends who are also delighted, especially our Welsh speaking friends.
Work completed:
Rapid same day response, went the extra mile as usual without complaint
Gareth and Tom have serviced our boiler regularly since 2015. Always with efficient and friendly service with a smile. A call out on December 5 for heating failure needed a valve replacement in the boiler. Tom came at the end of a long working day. He had to drive miles across Cardiff during rush hour traffic for the part. Then all the way back , still during rush hour, to do the job, which was a long one, without complaint about either the distance, heavy traffic both ways or his late finish after completing the job. Highly, highly recommended and have recommended to friends who have used them for boilers and bathroom replacement and were equally delighted. So glad a friend recommended them to us. An added bonus that they are Welsh speakers!
Work completed:
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Public evidence last checked June 2026
HeatGlow is an independently run, gas safe registered company based in Cardiff. Gareth Jones established HeatGlow in 2014 after 10 years’ experience working in the heating and plumbing trade. HeatGlow offers a range of services which are completed with quality and skilled workmanship and covered by a comprehensive guarantee. HeatGlow prides itself on providing customers with a reliable, friendly and professional service. Why Choose HeatGlow Professional and outstanding service Highly experienced gas engineers with over 25 years’ combined experience All aspects of heating, gas and plumbing covered All work is fully guaranteed Quality after care service Please contact us using the form on the Contact Us page with any inquiry or query that you may have and we’ll get in touch as soon as possible.
Listed on public sources or the business's own website; check directly that they cover your job before you book.
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Accreditations it displays. Confirm each is current on the official register before you hire:
These are statements the business makes on its own website, worth confirming in writing (and on the official registers) before you hire, not independently verified by us.
Approved plumbers on the free WaterSafe register are vetted, qualified to the water regulations and insured. Check they're listed, or find a WaterSafe-approved plumber near you.
Check the WaterSafe registerWant an extra legitimacy check? Run the Cowboy Checker on HeatGlow Heating and Plumbing before you contact them.
Run Cowboy Checker →They state on their own website that fast, responsive boiler repair services. This is the business's own statement on their website, not something we have independently checked. For an urgent job, call to confirm they can attend before you rely on it.
HeatGlow Heating and Plumbing has 35 independent public reviews, rated 4.9 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
HeatGlow Heating and Plumbing has 35 public reviews, averaging 4.9 out of 5. You can read the individual reviews and where each came from in the reviews section above.
HeatGlow Heating and Plumbing's 35 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.
We hold 1 independently sourced credential for HeatGlow Heating and Plumbing, including Which? Trusted Trader. Each is attributed to the body that issued it in the credentials section. For example, Which? Trusted Trader is Which? Trusted Trader: an endorsement from the consumer champion Which?, given to traders who pass its assessment process.
HeatGlow Heating and Plumbing lists specialist services including Immersion Heaters, Central heating systems (installation and servicing), Unvented cylinder installation and maintenance, Boiler installation, Boiler repair, Boiler servicing. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
They state on their own website that they cover Cardiff. This is the business's own statement on their website, not something we have independently checked. Confirm they cover your postcode before booking.
Recognition · from the public record
These describe public evidence MyTrustedTraders held at the stated dates. They are not independent awards, they cannot be bought, and they do not change this business's Trust Score or search position. How milestones are measured