Nick (Engineer number 829) did a fantastic job when he came out to fix an issue with my heat pump. He was friendly, extremely thorough, and took the time to explain everything he was doing so I felt... See more
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Engineer arrived very early on time Very professional engineer who has done a very good job after replacing the fan and G10 gasket We love your Valiant service plan and recommend it to all as its... See more
Company replied
Professional service the company was quick to send an engineer that was respectful polite and arrived on time he repaired my mums boiler it’s now working perfectly infact she said better than befo... See more
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Engineer Lee arrived within 24 hours of my phone call to get my Vaillant air source boiler (temperature sensor) repaired so I had hot water again. He was friendly, cheerful and efficient. He patiently... See more
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Company details
Written by the company
With a proud tradition in the UK, Vaillant are a household name because of exemplary products and service. Vaillant operates with the ultimate aim of delivering greater warmth and comfort to your home.
Vaillant UK
Written by the company
- Comfort for your Home
- With a proud tradition in the UK, Vaillant are a household name because of exemplary products and service. Vaillant operates with the ultimate aim of delivering greater warmth and comfort to your home.
- A History of Excellence
- Vaillant are one of Europe’s leading heat technology manufacturers and innovators. Incorporating the finest German engineering with UK manufacturing for enhanced performance, quality and reliability.
- Smart Boilers
- Innovating and developing the latest technology such as vSMART, Vaillant boilers can be operated via your smart phone to achieve a perfect temperature wherever you are.
- Quiet Mark Accredited
- Vaillant is proud of the fact that our domestic boilers and renewable heat pump products have all been independently verified and judged to be one of the quietest products of their kind on the market, meaning our products not only perform to the highest standard but are as equally environmentally friendly.
Contact info
Nottingham Road, DE56 1JT, Belper, United Kingdom
- customercare@vaillant.com
- www.vaillant.co.uk
4.6
Excellent
23K reviews
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Vaillant Engineer Lee 👍
Engineer Lee arrived within 24 hours of my phone call to get my Vaillant air source boiler (temperature sensor) repaired so I had hot water again. He was friendly, cheerful and efficient. He patiently answered my questions and gave me lots of helpful advice about running the system economically. Many thanks to Lee, he’s a star !
August 7, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5-star review. We are pleased to hear about your positive experience and that our engineer was able to quickly restore your hot water and provide helpful advice.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Had a frustrating “no demand” fault on…
Had a frustrating “no demand” fault on heating mode with my new Vaillant ecoTEC 840. Vaillant engineer Jonathan Hughes came out and sorted it in an instant. His knowledge, experience, honesty, and skill were top-notch. Exceptional service—well done, Vaillant!
August 6, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review. We are pleased to hear that our engineer was able to quickly resolve the heating issue with your appliance.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
A valiant engineer attended my home…
A valiant engineer attended my home today and delivered work of an exceptionally high standard. Their technical expertise was evident throughout the visit: they conducted a precise assessment, communicated their findings clearly, and executed each stage of the job with accuracy and care.
They demonstrated professionalism, integrity, and a strong commitment to safety, ensuring all work was completed thoroughly and to specification. The engineer’s conduct was exemplary, and the overall service exceeded expectations. I would not hesitate to recommend them for any future technical or engineering requirements.
August 6, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review. We truly appreciate you taking the time to share such positive feedback and your recommendation means a great deal to us.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Jonathan was prompt and informative.And…
Jonathan was prompt and informative.And did a great job
August 6, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review and for taking the time to provide us with your feedback.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Reply from Vaillant UK
We're glad to hear that you found our service easy to use. We appreciate your positive feedback.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
terrible company
terrible company. nobody seems to want to help. constantly getting past through to different departments.
a simple problem should be fixed with ease. instead i get people who barely speak English explain how it's not Vaillants problem, when its a Vaillant boiler. Beyond laughable as a business. avoid with at all costs.
August 5, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review, we’re sorry to hear about your experience. Our customer care team have listened to all the calls made to provide internal feedback as required.
As you have purchased a broadband router which is not compatible with your Vaillant vSMART control, this wouldn't be a warranty issue as the Vaillant product you have purchased is in working order.
We apologise for any inconvenience this may have caused.
Kind regards, Vaillant
Engineer arrived very early on time
Engineer arrived very early on time
Very professional engineer who has done a very good job after replacing the fan and G10 gasket
We love your Valiant service plan and recommend it to all as its brilliant
Your engineer doe a great job fir us and now I can have much needed shower as yesterday was only a cold shower 😆
August 5, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review. We are so pleased to hear that our engineer provided such professional and efficient service, getting your heating and hot water back on track. It's fantastic to know you appreciate our service plan and would recommend it.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Excellent engineer
Excellent engineer. Installed boiler successfully. Alot of work involved because of the boiler positioning, everything is perfect, very efficient boiler, all good
May 18, 2026
Unprompted review
Reply from Vaillant UK
We appreciate you sharing your positive experience with us.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Finally got my boiler serviced by…
Finally got my boiler serviced by Vaillant but they don't make it easy! I had to pay in advance for a fault diagnostic, and service. Engineer came out, diagnosed the fault, didn't do the service. I then had to rebook the service again. After which, no paperwork is provided, so then you have to ring them yet again to get the boiler service documentation. Which of course has to go to another team, and can take up to 28 days for them to email it to you. So horrific customer service, poor processes and masses of cost built in. Terrible.
August 4, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review, we’re sorry to hear about your experience. Thank you for providing further information so we could look into this with our Customer Care Team, the team has advised that they have fully investigated this and been in touch with you directly, please refer to the correspondence from customercare@groupservice.co.uk for further information.
We apologise for any inconvenience this may have caused.
Kind regards, Vaillant
Excellent service
Andy was super helpful, talked through everything regarding settings which might work better and temperatures and amended the system to accommodate.
August 4, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review. We appreciate you sharing your positive experience with our engineer.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
5 Stars - Fantastic service from Nick
Nick (Engineer number 829) did a fantastic job when he came out to fix an issue with my heat pump. He was friendly, extremely thorough, and took the time to explain everything he was doing so I felt completely in the loop.
He identified and resolved the underlying problems that had previously been missed, getting everything up and running perfectly. Top-class service, I couldn't be happier with his work
August 3, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your kind review. We are pleased to hear that our engineer provided such thorough and helpful service, resolving the issue with your heat pump. We appreciate you sharing your positive experience.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
A friendly and helpful engineer
The engineer was friendly and helpful and explained difficulties I had experienced with pressure in the boiler, even writing instructions so I would not forget.
July 29, 2026
Unprompted review
Reply from Vaillant UK
We appreciate you sharing your positive experience. It's great to hear that our engineer was friendly and helpful, taking the time to explain the boiler's pressure difficulties and even providing written instructions.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
The valiant air source heat pumps are…
The valiant air source heat pumps are so bad it should be illegal.
We can, sometimes, get ten minute shower for two people before it goes cold.
Today, we weren’t in. Left the immersion on (you have to do this with valiant). The hot water didn’t last long enough to fill a bath.
We are lucky enough to be able to pay them £200 for a service. They won’t help otherwise.
Dreadful pieces of kit. If you buy them, you will not get hot water. You have been warned.
August 1, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review, we’re sorry to hear about your experience. Thank you for providing further information so we could look into this with our Customer Care Team, the team has advised that they have been in touch with you directly regarding the issues mentioned, please refer to the email from customercare@groupservice.co.uk for further information.
We apologise for any inconvenience this may have caused.
Kind regards, Vaillant
A great engineer turned up to our…
A great engineer turned up to our property, with a wealth of experience, he managed to resolve our issue and get our boiler working again and was very helpful when it came to answering our questions and explaining the issues we were having with our boiler, as well as best practice advice for going forwards in terms of aftercare and looking after our boiler as best as we can.
August 1, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review and kind feedback. We are pleased to hear that our engineer's experience and helpfulness resolved your boiler issue and provided valuable advice for its future care.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
#113 Glyn
The engineer was extremely efficient and helpful and the problem (replacing the CO sensor) was resolved.
August 1, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review. We are so pleased to hear that our engineer was efficient and helpful, and that the issue was resolved.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Simon Lloyd was an excellent engineer…
Simon Lloyd was an excellent engineer and resolved a boiler problem that had been ongoing for 6 months. Vaillant technical knowledge of their own product made the difference.
July 27, 2026
Unprompted review
Reply from Vaillant UK
We appreciate you sharing your positive feedback regarding the resolution of your boiler problem. We are pleased to hear about the excellent service and technical knowledge provided.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Called with system failure at 1.35pm
Called with system failure at 1.35pm
Engineer arrived at 3.30pm, replaced parts that had failed and had hot water again 40 mins later.
Engineer 304 was very professional and polite, and cleaned up any mess made.
July 31, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review, we are so pleased to hear about your positive experience with our engineer. We are proud of our team and appreciate you taking the time to share your feedback.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
#113
Excellent engineer. Phoned in advance of arrival. Very friendly and polite, very experienced, and identified the fault immediately and replaced the faulty part. Checked system and proactively identified potential future issue and resolved that too. Tested system. All through the visit the engineer explained what he was doing. Highly recommend this company and this engineer.
July 31, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5-star review. We're pleased to hear that our engineer provided such an excellent and thorough service, keeping you informed every step of the way. We appreciate your high recommendation.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Annual boiler service
Annual boiler service. Easy to book. Engineer Danny 519 phoned ahead and was early which was good. Courteous and friendly engineer
July 31, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review. We are pleased to hear that booking was easy and that our engineer provided such courteous and friendly service, even phoning ahead and arriving early. Your positive feedback is greatly appreciated.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
Mick called on way
Mick called on way
I was delighted
Civee area services boiler very good
July 29, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review and for taking the time to provide us with your feedback.
Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/
Kind regards, Vaillant
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