Always a pleasure to work with Jon who installed the boiler and maintains it - he's even good natured when I call him with some ridiculous question and he still visits to reassure me :-)
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
See what reviewers are saying
Called Jon out as our old boiler wasn’t working. He got it going but recommended that it needed replacing but also provided a quote for a permanent fix to the old boiler. We opted for replacement wh... See more
Fantastic service at a reasonable rate and in a swift timeline. Jon sourced the cylinder and fitted in a few days - despite issues with the supplier! informed the tenants constantly and kept them loop... See more
Jon was efficient doing a highly professional Job. He was clear with his communication about what he was doing and what he discovered in his investigation. He was friendly whilst keping his workspac... See more
Company details
Written by the company
Theale Gas is a small family run business covering Berkshire, Hampshire and surrounding areas. We specialise in gas, heating and plumbing solutions and are proud to be Worcester accredited installers. Theale Gas is owned and run by Jon Fleming who also lives in Theale near Reading. Jon has nearly 30 years of experience in the industry and is joined by a team of 3 engineers with a wide range of expertise and specialisms. Theale Gas pride ourselves on great customer service, timeliness, tidiness and reliability. If you have a heating or plumbing problem please don’t hesitate to call Theale Gas for a friendly no obligation conversation/quote to see how we can help.
Contact info
28 Woodfield way, RG75AB, Theale, United Kingdom
- 07979542998
- Jon@thealegas.co.uk
- thealegas.co.uk
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Kitchen Cupboard Repipe
Jon was efficient doing a highly professional Job. He was clear with his communication about what he was doing and what he discovered in his investigation. He was friendly whilst keping his workspace clean and adhering to Covid guidelines
He also removed all of the old fittings from the property so there was nothing I needed to dispose of.
The only negative I can think of was some delays with communication, however it can be hard to keep up with communication given that he predominantly wil be doing very hands on jobs or driving between sites throughout the day.
We needed a radiator replacing
We needed an old radiator replacing and Theale gas found a replacement. It was fitted for a reasonable price quickly without any fuss. An excellent service.

Reply from Theale Gas
Gas fitters ,look no further
Very efficient service prompt and tidy work,both Jon and Ben were friendly and professional and very sensibly priced, would definitely recommend them of you are looking for any gas works. Tim and Jules

Reply from Theale Gas
Fantastic Job
Thanks to Jon and the team at Theale Gas, they fitted a new central heating boiler for me this week. I would have no hesitation in recommending them, they offer an extremely professional, prompt and friendly service.
Highly recommended
Jon from Theale Gas fitted us a new boiler and we found that he provided us with a great and efficient service and at a good price.
Would highly recommend.
Fantastic really please with Jon and…
Fantastic really please with Jon and his workmanship, honest and reliable. Would highly recommend his services.
Excellent service
Jon responded immediately to our dilemma. He was extremely helpful, going above and beyond the normal brief in order to ascertain the problem and resolve it. W would certainly use him again.

Reply from Theale Gas
Toilet syphon broken
Toilet syphon broken. Theale Gas came very quickly and replaced it - no mess no fuss.
Covid rules kept. They were very polite and friendly.

Reply from Theale Gas
Replaced a floor standing boiler with…
Replaced a floor standing boiler with new Combi boiler, removed hot water tanks etc.
Very good job managed to do it all in 2 days. New boiler working well.
Fast, efficient and friendly.
Theale Gas gave us fast, efficient and friendly service. We were very impressed with the professional service from quotation, to installation and the excellent after care. Theale Gas responded quickly where others had failed to get back to us. We would highly recommend Jon and his team for quality service at a reasonable price.

Reply from Theale Gas
Excellent service
Very pleased with the short notice and rapid response from Jon. A pleasure to do business with

Reply from Theale Gas
Jon came out quickly to assess why my…
Jon came out quickly to assess why my boiler had broken down. We decided it was time for a new one, very good & efficient service, would recommend very highly.

Reply from Theale Gas
Reliable and professional
Reliable and professional; had a new boiler installed, Jon turned up when he said he would, got the quote back when he said he would, replied promptly to all my questions, was easy to get hold of and all round seemed far more organised, diligent and professional than the other installers who quoted.
I’d have no hesitation recommending Jon and his team to others.
Great Service
Booked at short notice to solve an issue with a gas fire which they resolved quickly.
Arrived within the timescale quoted, polite and friendly and Covid safe.
Would highly recommend.

Reply from Theale Gas
Reasonably priced and professional
I found Theale Gas to be very professional. Jon arrived when he said he would, located the problem, explained what it was and how much it was going to cost to fix (which seemed to be a fair price), then set to work mending my heating. Very impressed. Would highly recommend.
Professional and excellent service (New boiler)
Excellent service from Jon and his team. They installed a new Bosch boiler and Nest thermostat. The price quoted was reasonable even gave a free pump, which needed replacing. Work done was very neat and professional. Highly recommended !! I will be using his service again to change our hot water tank.

Reply from Theale Gas
Excellent service
I manage a portfolio of properties and this Christmas Eve, I had a family report to me that they had no heating. At very short notice, Jon was able to attend to find the fault and go back on the same day to fit the necessary part to resolve the problem. I was extremely grateful, as was the family living in the property, knowing they wouldn't be left without heating over the Christmas period! Would strongly recommend Theale Gas to anyone.

Reply from Theale Gas
Heating flush
My heating system was performing poorly due to years of built up sludge in the system. Jon and his sidekick turned up and gave my system a thorough flushing out. You could notice the difference straight away! Jon even provided thermal imaging to show the effects. Thank you very much.
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.







