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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Simon #314 did a great job.
Simon #314 did a great job repairing our boiler under guarantee. I only reported the fault yesterday afternoon and he arrived today at 9am having phoned 20 minutes earlier to advise the time. He was very polite, friendly and professional and replaced the faulty part and even returned the batteries out of the old unit. All now working perfectly; many thanks for a faultless service and a great experience.
July 8, 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
VAILLANT DOES NOT CARE ABOUT CUSTOMERS!
New Response from Vaillant to this post from a BOT. See, they can't even take the time to respond to their customers. Their customer service is DIRE! AVOID, AVOID, AVOID!!!
Response from Vaillant shows they are ONLY interested IN TAKING YOUR MONEY!
If you have a complaint against their equipment, and service provided the are COMPLETEY UNINTERESTED. If they think having TWO PARTS replaced within SIX WEEKS of the boiler being installed, that I'm going to have a confidence in the boiler, THEY'RE WRONG! Yes, I have a warranty on it but, it costs me time, which equals money plus the inconvenience of it all. They DO NOT TRY and accommodate the customer, and EVERYTHING is skewed in THEIR FAVOUR. AVOID, AVOID, AVOID.
July 7, 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 caused with this.
Kind regards, Vaillant
Our lecturer Tobi was excellent.
Our lecturer Tobi was excellent.
He tough us in a very understanding way.
I got way with a lot more knowledge
July 7, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5* review. We are so pleased to read your comments, it's much appreciated.
Kind regards, Vaillant
Really helpful tuter Toby and learned…
Really helpful tuter Toby and learned the new stuff.
July 7, 2026
Unprompted review
Reply from Vaillant UK
We are so pleased to hear that you found our training team member helpful and were able to learn new and valuable information.
Kind regards, Vaillant
Spent a day on the installation and…
Spent a day on the installation and servicing course learning about the ecoTEC plus range.
Toby provided a lot of information both practical and theory on best practice.
Recommend to all engineers.
July 7, 2026
Unprompted review
Reply from Vaillant UK
We are so pleased to hear you found our installation and servicing course on the ecoTEC plus range beneficial. We appreciate your positive feedback and recommendation to other engineers.
Kind regards, Vaillant
Incredible service
Incredible service. The boiler stopped working (pcp problem). The engineer arrived the next morning, replaced the pcp, all now working again. Engineer incredibly polite and efficient. So impressed
July 7, 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
Very useful course
Very useful course, well delivered and great facilities. Shah was a great help, excellent knowledge and delivered the course brilliantly. Thank you.
July 6, 2026
Unprompted review
Reply from Vaillant UK
We're pleased to hear that you found the course useful and well-delivered. We appreciate your positive feedback regarding the excellent knowledge and delivery of the course content.
Kind regards, Vaillant
Very informative training course
Very informative training course. Shah was very knowledgeable and helpful.
July 6, 2026
Unprompted review
Reply from Vaillant UK
We are pleased to hear you found the training course informative and that our team member was knowledgeable and helpful. We appreciate your positive feedback.
Kind regards, Vaillant
Mike #724 engineer come today he came…
Mike #724 engineer come today he came to sort out my heating. He also explained the app to us. Thank you very much.
July 6, 2026
Unprompted review
Reply from Vaillant UK
We're pleased to hear that our engineer successfully resolved your heating issue and provided a helpful explanation of the app. Thank you for 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
Excellent service from Leo (Agent 213)
Excellent service from Leo (Agent 213). He was friendly, professional, and arrived on time. He serviced my Vaillant boiler efficiently, explained everything clearly, and left everything clean and tidy. A great experience from start to finish. Highly recommended!
June 29, 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
Helpful
Helpful on the phone. Accommodated my need for a quick response as there is a severely disabled person on the house.
Engineer 536 Gavin pleasant and helpful
July 4, 2026
Unprompted review
Reply from Vaillant UK
We're delighted to hear that our team was helpful on the phone and able to accommodate your need for a quick response. We're also pleased that our engineer provided a helpful service.
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
Outstanding customer care!!!!!
Outstanding customer care!!!!!! I really would like to praise Brian 621 Engineer and Mark 505 Senior Tech Manager These guys have been absolutely amazing!!! I have a 10 year warranty with Valliant and started to experience issue's with my boiler Brian replaced a part in my boiler but unfortunately this did not resolve the issue so escalated this to Mark who immediately phoned me to book an appointment to visit me and inspect the boiler himself On inspection he told me my boiler was to be replaced with a brand new one!!! Mark immediately sorted out the replacement and arranged a date with me for both himself and Brian to install the replacement one The customer care l have received from them both has been impeccable along with extremely professional,friendly, and peace of mind being replaced with a brand new boiler Can't thank them both enough and they are an absolute credit to Valliant!!! l would also like to praise the Customer Care Team!!! Highly highly recommend purchashing from Valliant!!!
July 1, 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, Technical Manager and the Customer Care Team. 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
Outstanding service from Leo Engineer…
Outstanding service from Leo Engineer 213 5 star ⭐️ service. He’s a star
July 3, 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
Truly dreadful service.
Truly dreadful service. My plumber identified a leak in my hot water tank (1 year old Unistore 300) on the 22nd of June. A Vaillant engineer was out the next day, but gave the impression he hadn't seen many of this type of tank, spent a lot of time on the phone, and left after misdiagnosing the leak as an installation issue. The installers have been out twice since and confirmed that the leak is not external to the tank. A second (much better) Vaillant engineer came out on the 1st of July and confirmed that the tank was leaking and would be replaced under warranty. Since then I have been trapped in call centre purgatory, unable to get a straight answer to the apparently simple question: When will you replace the tank? The people in the service centre can't even tell me when they'll be able to answer the question, let alone actually fix the problem. Meanwhile I'm stuck here with no hot water for the foreseeable future.
June 23, 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 for further information.
We apologise for any inconvenience caused with this.
Kind regards, Vaillant
Efficient and friendly engineer
Efficient and friendly engineer. No time wasted, came did the job and left my house as he found it. The engineers #508
July 3, 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
Repair and service
Our engineer was tom 710
He was polite explaining what he had done and what needs doing
He cleaned up afterwards
Good service
Thank you
July 3, 2026
Unprompted review
Reply from Vaillant UK
Thank you for your 5* review. We're happy to hear that the engineer explained the service clearly.
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 fantastic experience
Absolutely fantastic experience, brilliant advice from Tom.
July 2, 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
Booked yesterday aerviced boiler today
Booked yesterday serviced boiler today! Excellent polite professional service!
July 2, 2026
Unprompted review
Reply from Vaillant UK
We are so pleased to hear about your excellent experience with our service and prompt scheduling. We appreciate your kind words!
Kind regards, Vaillant
Just like a circle,true to it's…
Just like a circle,true to it's centre,a promise made and a promise kept.The service i received was first class from start to end.All layers of communication and personnel were simply exemplary.Engineer 822 was the final icing on the cake.
July 2, 2026
Unprompted review
Reply from Vaillant UK
We are absolutely delighted to hear about your first-class experience and that our team provided such exemplary service from beginning to end. Thank you for your wonderful 5-star review!
Kind regards, Vaillant
Ben (#151) was very quick and helpful
July 2, 2026
Unprompted review
Reply from Vaillant UK
We're so glad to hear about your positive experience with our team member! We appreciate you sharing your feedback and will be sure to pass this onto Ben and his managers.
Kind regards, Vaillant
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