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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Review summary
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Reviews shaping this summary
Really excellent service from vaillant. Our 15+ year boiler developed a problem. A different company advised that it needed to be replaced and quoted £4,871 to replace! The vaillant engineer quickly d... See more
Company replied
Fantastic service Tom #538 on our Vaillant annual boiler check. Kept Upto date with everything from start to finish text us the night before, messaged us 30 mins before arriving, Tom fully explaine... See more
Company replied
Ryan - Engineer No 260 did an excellent job. He ran up and down stairs in boiling hot weather making sure he left nothing unchecked. He even managed to check the flue which is in a very awkward part o... 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 can't be trusted to honor their own specifications
Vaillant can't be trusted to honor the system capabilities that they advertise. Their internet gateway, essential for accessing your heating controls via a smart home system such as Alexa is currently advertised as having Alexa control, not an unusual thing in 2026. Vaillant have removed this functionality with no apparent intention of restoring it, but are still happily advertising it as a function in their sales literature. This is deceitful, don't expect anything that they advertise to be true.
July 20, 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, we have sent you an email for some further information so we can look into this with the literature team.
We apologise for any inconvenience this may have caused.
Kind regards, Vaillant
Good hospitality
Good hospitality, teaching thorough and hands on, good communication
July 20, 2026
Unprompted review
Reply from Vaillant UK
We are pleased to hear your positive feedback of your day with us, thank you.
Kind regards, Vaillant
Traing was spot on
July 20, 2026
Unprompted review
Reply from Vaillant UK
We appreciate your positive feedback of the training course, thank you for letting us know.
Kind regards, Vaillant
Engineer was very friendly,helpful and…
Engineer was very friendly,helpful and kept me informed what he was doing
July 20, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5-star review. We're pleased to hear that our engineer was friendly, helpful, and kept you informed throughout their visit.
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
Good experience
The engineer, a friendly chap turned up on time and explained the work that was done.
July 19, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review. We are so pleased to hear that our engineer was punctual and clearly explained the work that was carried out. 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
Engineer arrived on the same day I…
Engineer arrived on the same day I called and fixed the fault. Engineer was thirough, respectful of my property and explained what he was doing and why.
July 17, 2026
Unprompted review
Reply from Vaillant UK
We appreciate you sharing your positive experience. We're so glad to hear that our engineer arrived quickly and was thorough and respectful while explaining the repair.
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
I received excellent customer care from…
I received excellent customer care from Sophie, the Vaillant representative. Thank you.
July 17, 2026
Unprompted review
Reply from Vaillant UK
We are pleased to hear you received excellent customer care. Thank you for taking the time to share 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
VAILLANT new air source heat pump fitted FAULTY
i had a new air source heat pump fitted just over 2 years ago and it is now faulty and not working at all . I called VAILLANT and they tell me the warranty is 2 years so its not covered under warranty, they can send an engineer out at the cost of £490 plus parts. I think this is terrible service from such a big company,i am 70 years old and living on my pension and cant afford this. wish i never had it done.No heating for me this winter.
July 15, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review, we’re sorry to hear about your experience. The email address and phone number you have provided do not bring up any installation details or phone/email records. Please email us at reviews@vaillant.co.uk with the installation address this relates to, so that we can look into this with our customer care team. We look forward to hearing from you.
Kind regards, Vaillant
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
Extremely pleasant and informative!
Extremely pleasant and informative!
Such a lovely fella No 548.
Thank you
July 17, 2026
Unprompted review
Reply from Vaillant UK
Thank you for taking the time to share 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
A big thank you to Adam Gibbs (Engineer…
A big thank you to Adam Gibbs (Engineer No. 102) for the excellent service. He did an outstanding job and was friendly, enthusiastic, and very customer-focused. He took the time to show us the parts he had replaced and explained everything clearly, which we really appreciated. It’s great to see someone who genuinely cares about doing a good job. Thank you, Adam!
July 17, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review. We are so pleased to hear about your positive experience with our engineer. It's great to know that his customer focus and clear explanations were appreciated. We are proud of our team and value 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
New boiler installed by engineer and…
New boiler installed by engineer and its faulty. Vaillant refuse to change it. I have no hot water for 2 days now.
I am changing the boiler to a new one at my cost.
July 15, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review, we’re sorry to hear about your experience. Thank you for providing your reference number so we could look into this with our Customer Care Team, the team has advised that they have already fully investigated this and been in touch with you directly, please refer to the correspondence from customercare@groupservice.co.uk sent on 16/07/2026 at 16:45 for further information.
We apologise for any inconvenience this may have caused.
Kind regards, Vaillant
Engineer visited and fixed the issue
Engineer visited and fixed the issue. Was friendly and professional.
July 16, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5-star review. We're pleased to hear that our engineer successfully resolved the issue and provided a friendly, professional service. 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
Happy with service
Simon came to service the boiler. Clearly explained everything was helpful and efficient.
July 16, 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
Had issues with my boiler for 3 months…
Had issues with my boiler for 3 months had fault codes every few days no matter what it still faulted but then chris tested parts in my boiler and found the problem he then ordered parts and came a few days later I have been so stressed with it but after chris found the problem and fitted the new parts he has put my faith back in my boiler i would highly recommend him he done all work to a great level I appreciate his work his engineer number was 632 thank you
July 11, 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
Reply from Vaillant UK
Thank you for your 5 star review, we appreciate your kind words.
Kind regards, Vaillant
Brilliant and very informative training…
Brilliant and very informative training done by the trainer Shah at the Elland training centre should highly recommend the training centre
July 14, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 star review. We are so pleased to hear you found the training informative and that you highly recommend our training centre.
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
Thank you for your positive feedback, we're pleased to hear this.
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
Engineer arrived as arranged.
Engineer arrived as arranged, was polite and friendly and seemed capable.
July 13, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review. We appreciate you sharing your positive experience of your engineer visit.
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
Good words don't care
Service engineering very good
Actual longevity of the units from my view questionable at this time.
So I have maybe a 4 year under warranty boiler where I live
I have a rental that has one maybe on its last legs after just 14 years.
My partner has one I project managed instillation and support
The last one is what this review is about.
First I will say all units professionally installed and also maintained throughout.
So my part 100% to date
This was installed 2018 and the expansion vessel failed about 2 or 3 years in (still under warranty) so vaillant replaced .
Same part appear to have failed again but out of warranty.
Made a report to vaillant because this seems like a rolling problem "the user of this heating system scrimp in winter to keep bills low so the boiler from that view is low usage)
Vaillant was prompted (thank you) to reply and with a polite letter (in summary) it's out of warranty, they sympathise but I am on my own.
Looks like when it's time for a replacement we will have to choose a different make and not just for this one.
See if a low usage unit have the same part keep failing better to have an alternative make mitigate cost in future years.
Thanks vaillant 🤨
update 16 july
following review , ask for more information. following the provision of the information , vaillant replied with the response you see.
i was already fully aware before raising the review.
in addition their review when the issue was raised directly with their customer service came back so quick. it must have been only date installed, out of warranty, no longer our porblem (thats my intrepretation because of the swift reply.
July 13, 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 already 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
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