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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Review summary
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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
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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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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.
13 July 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.
13 July 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
Jake ( engineer 340 ) is polite…
Jake ( engineer 340 ) is polite efficient and friendly.
13 July 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.
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
Great engineer
13 July 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.
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
Absolutely brilliant service from Nick…
Absolutely brilliant service from Nick at Vaillant. Extremely knowledgeable and professional. A real credit to his profession. I would highly recommend Nick and Vaillant. Replaced multiple parts and explained everything clearly.
11 July 2026
Unprompted review
Reply from Vaillant UK
We are so pleased to hear about your excellent experience with us. Thank you for your kind words and 5-star review.
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
Absolutely fabulous engineer
Absolutely fabulous engineer, so helpful, explained everything was really quick at the actual fix. I’m very grateful for their patience as I was running late and they were able to accommodate that. Highly recommend, what a gent!! Thank you so much.
11 July 2026
Unprompted review
Reply from Vaillant UK
We're so pleased to hear about your positive experience with our engineer. We appreciate you sharing 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
Prompt attendance
Prompt attendance. Helpful chat about the problem with Stuart 537.
11 July 2026
Unprompted review
Reply from Vaillant UK
Thank you for your kind review. We 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
Kind regards, Vaillant
Top draw service.
Engineer was extremely thorough. Knew the fault and was really prepared. Additionally checked sensors and ensured boiler was working to the required efficiency. So clean and tidy. Overall, perfect!
10 July 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 Glyn
We had a water leak in our boiler and called Vaillant at 8:30am. We were grateful to get a same day call out and Glyn arrived by 1:30pm. He was efficient and diagnosed the fault, as a leaking valve. Aside from fixing this he also noticed a faulty pressure sensor and replaced a total of three parts. We were very satisfied and impressed with the service provided.
10 July 2026
Unprompted review
Reply from Vaillant UK
Thank you for your review. We're pleased to hear about your positive experience with our engineer and the efficient service provided. We 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
Highly recommend.
Highly recommend.
Professional, clean & tidy.
Ben#151 was efficient, polite and kept me informed throughout the boiler service.
5 star service thank you.
10 July 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5 * review. We are pleased to hear about 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
Excellent service
Excellent service. Sam the engineer was professional and very knowledgeable. He resolved the problem other engineers couldn't.
8 July 2026
Unprompted review
Reply from Vaillant UK
We're pleased to hear that our engineer was professional and knowledgeable in resolving the problem. Thank you for 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
Engineer very helpful and polite
Engineer very helpful and polite. Response was very quick
9 July 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.
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 it is greet
9 July 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
#113 Glyn
Glyn is an absolute superstar 5*+ and we feel a very valuable asset to Vaillant who we booked the repair visit through . Glyn has attended our property several times now and always goes above beyond - going the extra mile. He is very technically knowledgeable and personable. He is also very caring of our property. We have no hesitation in highly recommending Glyn - thank you Glyn
9 July 2026
Unprompted review
Reply from Vaillant UK
We are delighted to hear such wonderful feedback about the service received from our engineer. It's fantastic to know that their technical knowledge, helpfulness, and care for your property made such a positive impression. We truly appreciate you taking the time to share your 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
Vaillant dhw fault
Had a local company to investigate an issue with the boiler dhw,they swapped out several parts but still not fixed,contacted Vaillant who sent an engineer within a few days,he diagnosed the issue quickly and ordered parts few days later came back ,fitted parts and checked all working ok,really polite, professional guys explained everything that had been done,excellent service.
8 July 2026
Unprompted review
Reply from Vaillant UK
We are so pleased to hear about your positive experience with our service. We appreciate you acknowledging our engineer's efficient diagnosis and quick resolution. Thank you for 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
Ben (#151) did a really good job…
Ben (#151) did a really good job servicing our boiler. He was very polite and courteous throughout and clearly explained what he was doing and what he had done. He arrived on-time having phoned up earlier to let us know when to expect him. In summary he was very professional and efficient.
9 July 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
820 Fred.
820 Fred
Very polite and really good explanation re what the service included.
Arrived on time.
Good ambassador for Vaillant and will certainly use the company for the 2027 service.
Great job, thanks.
9 July 2026
Unprompted review
Reply from Vaillant UK
Thank you for your wonderful review. We are pleased to hear about your positive experience with our service and that our engineer provided such a clear explanation. We look forward to assisting you again in 2027.
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
Perfect service
Appointment promptly arranged.
Engineer arrived quickly and phoned ahead before arrival.
Problem identified and solved quickly and satisfactorily.
Useful suggestions provided for avoiding issues and for next service.
8 July 2026
Unprompted review
Reply from Vaillant UK
We're pleased to hear about your positive experience, from the prompt arrangement of your appointment to the quick and satisfactory resolution of the problem. We appreciate you sharing 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
Loved it
Loved it. Shah is a great trainer, really enthusiastic and the venue is so modern and clean.
8 July 2026
Unprompted review
Reply from Vaillant UK
Thank you for your wonderful review. We are so pleased to hear about your positive experience with our trainer and our modern, clean venue. We appreciate you taking the time to share your feedback.
Kind regards, Vaillant
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