Full Flame. Specialising in Boiler Service & Boiler Repairs.
I will Repair your Boiler NOT Sell you a New One.
Vaillant Turbo Max Plus The Best Boiler Vaillant Made.
Remember A Vaillant Boiler Should Last at Least 25 Years
I Offer a Fixed Price Boiler Service / Boiler Repair £90 No Vat
I WILL NOT CONDEMN YOUR BOILER. (after 20 mins. Scratching my Head)
Remember No Fix No Fee.
Expert Vaillant Boiler Service & Repairs.
Boiler Repairs. £90 No Vat.. Fixed Labour Price.
You will be Charged for a Boiler Part If Needed.
Most Vaillant Boiler Parts are Carried in the Van.
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Reviews (156)
4.9· 156 reviews
Please note: any reviews provided by our partner, Google are not managed or verified by Gumtree.
Sanjana Varghese
5.010 April 2026
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John is the best possible engineer you could get – reasonable, explains everything very clearly and very knowledgeable.
I called John after being quoted 4.3k by Pimlico Plumbers to put in a new boiler (and told I needed various other services). John was able to diagnose my issue through Whatsapp photos, and visited twice to fix my boiler. He showed me what he was doing, explained how various mechanisms in the boiler worked and gave me lots of advice about how to make sure the boiler continued to work. He also explained a lot of different things about how to keep my gas bills down, how the mechanisms between different parts of my apartment (radiators/showers/etc) all worked and what I could do to make sure everything was working efficiently. Through it all, he was reassuring about the issues I was having with the boiler, and made sure that I was completely aware of what was happening.
John clearly cares a lot about his work + knows a lot about it too. He also has a lot of integrity and is very fair and upfront about what he charges, how much things cost and what you should not be paying for. I can't recommend him enough!
Sonia Loud (Soni)
5.022 January 2026
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John was very genuine and knowledgeable. Very glad we found him. He explained everything, charged fairly and also helped us save several hundred pounds a year on gas. Would recommend highly !
Steven McDonnell
5.021 January 2026
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Highly recommend John at Full Flame.
Another engineer had serviced my boiler last time and said it needed expensive repairs but refused to carry them out based on it being 20 years old - clearly trying to get me to pay for a new boiler.
Was recommended John by another installer on the basis that he is a specialist on Vaillant boilers and is always happy to carry out repairs. Had john round this morning to service the boiler, he found only minor repairs needed and was quick, friendly and informative throughout (and reasonably priced).
Oliver Clark
5.08 October 2025
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Amazing service John has sorted out my Vaillant boilers on two of my properties many times . He is a really nice guy. He’s really fair and honest and he definitely knows his stuff. Can’t recommend him highly enough. !
Gil Sutherland
5.030 September 2025
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John has serviced our boiler for the past four years and has always done a splendid job for us and explained any problems we have encountered. He is a wonderfully friendly and helpful technician. We experienced a crisis with our Vaillant over the weekend and contacted John for help. He spent much of his free time on a Sunday talking things through and telling us what action to take whilst all the time staying on the line. With his help we solved the problem and our boiler is now working once again. We know of no other technician who would go out his way to such an extent over a weekend to help his customers. He really is a very caring kind man and we're very fortunate to have him as our sole service provider.
We can highly recommend him in every way. Joe and Gil