Vaillant UK Reviews 

23,358
TrustScore 4.5 out of 5

4.6

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Review summary

Created with AI, based on recent reviews

Reviewers overwhelmingly had a great experience with this company. Customers consistently praise the engineers for being professional, knowledgeable, and friendly, often providing helpful advice and explaining their work clearly. The service is frequently described as excellent, with many appreciating the prompt response times and efficient resolution of issues. Office staff are also noted for being helpful and pleasant to interact with. However, some people mentioned experiencing product faults, with boilers requiring multiple repairs or part replacements shortly after installation. A few other people also felt that customer service was unhelpful or difficult to reach, sometimes leading to frustration when trying to resolve issues.

What people talk about most

Staff

Customers consistently note positive experiences with staff, praising their professionalism, knowledge, and... See more

Service

Reviewers mention positive feedback about service, with many praising the professionalism, efficiency, and... See more

Customer service

People report positive experiences with customer service, highlighting helpful and empathetic interactions.... See more

Product

Clients share ambiguous opinions on product, with some reviewers expressing satisfaction with their boilers,... See more

Customer communications

Reviewers highlight ambiguous aspects of contact, with some customers reporting proactive communication, such... See more

Reviews shaping this summary

Rated 5 out of 5 stars

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

Rated 5 out of 5 stars

​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

Company replied

Rated 5 out of 5 stars

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

Rated 5 out of 5 stars

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

Company replied


Company details

  1. Boiler and Heating Service
  2. Boiler Manufacturer
  3. Boiler Supplier

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

4.6

Excellent

TrustScore 4.5 out of 5

23K reviews

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4.6

All reviews

(23,358)

1,466 reviews in the last 12 months

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Rated 5 out of 5 stars

Engineer had a very friendly manner

Engineer had a very friendly manner, explained what work he was doing and went the extra mile to please the customer. Very impressed.

18 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We're delighted to hear our engineer was friendly, explained the work, and went above and beyond. We appreciate your positive feedback.

Kind regards, Vaillant

Rated 5 out of 5 stars

The course was incredibly insightful…

The course was incredibly insightful and informative. Saha the trainer wes very thorough and knowledgeable. I was very impressed. Highly recommend and appreciated.

17 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

Thank you for your wonderful review. We are so pleased to hear you found the course insightful and informative. Your positive feedback is greatly appreciated.

Kind regards, Vaillant

Rated 5 out of 5 stars

Absolutely fantastic service

17 June 2026
Unprompted review
Vaillant UK logo

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

Rated 5 out of 5 stars

Shah he is excellent

16 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

Thank you for your review and for taking the time to provide us with your feedback of your training with Shah, we really appreciate it.

Kind regards, Vaillant

Rated 5 out of 5 stars

Had a great training experience with…

Had a great training experience with Shah the tutor who hosted the session. Very informative and gained more knowledge about the Vaillant brand.

16 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We are so glad you had a great training experience and gained valuable knowledge. Thank you for your positive feedback.

Kind regards, Vaillant

Rated 5 out of 5 stars

Good expansion of Knowledge on using…

Good expansion of Knowledge on using Vaillant systems to aid with fault finding in a quicker more efficient way going forward, thank you shah

16 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We are so glad to hear our Vaillant systems training expanded your knowledge for quicker, more efficient fault finding. Thank you for your feedback.

Kind regards, Vaillant

Rated 5 out of 5 stars

Vaillant Training

Toby Collis was very good at explaining faults and lots of knowledge in why faults happen and how to repair them. Very useful day thank you!!

16 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We appreciate your feedback. We're glad our team member provided clear explanations and helpful knowledge. Thank you for sharing.

Kind regards, Vaillant

Rated 5 out of 5 stars

Toby has been amazing

Toby has been amazing
Really knowledgeable guy and really good at explaining
Really enjoyed today and learnt too
Thank you Again Toby

16 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We're so glad you had such a positive and informative experience. We appreciate your kind words and feedback.

Kind regards, Vaillant

Rated 5 out of 5 stars

Training day

Went for a training day on fault finding and our instructor for the day, Toby was great, learned a lot and very useful for the future.

16 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We are so glad you found the training day valuable and useful. We appreciate your positive feedback.

Kind regards, Vaillant

Rated 5 out of 5 stars

Jonathon

Jonathon, engineer 268. Was very efficient and professional and fixed my problem very quickly

16 June 2026
Unprompted review
Vaillant UK logo

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

Rated 5 out of 5 stars

Neil was very efficient

Neil was very efficient, polite, and a clean trades person. Fixed our boiler in timely fashion.

15 June 2026
Unprompted review
Vaillant UK logo

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

Rated 5 out of 5 stars

Quick and professional service

Quick and professional service. The engineer was very knowledgeable and helpful

15 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We're so pleased you had a 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

Rated 5 out of 5 stars

Excellent service

Excellent service from Richard Hall. He phoned to let me know he was on the way and arrived on time. Richard identified the problem with my boiler straightaway (it needed a new circuit board) and carried out the repair quickly and competently. He ran several tests afterwards to ensure everything was running smoothly.
Richard was very professional and friendly and I am very pleased with the service I received.

15 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

Thank you for your 5* review. We're glad our engineer was professional, friendly, and resolved your boiler issue efficiently. We appreciate you sharing your feedback.

Kind regards, Vaillant

Rated 5 out of 5 stars

Thorough service

Clear explanations, thorough work, patience when asked for clarification, clear and nice, and clear advice about different aspects of boiler maintenance and insurance.

#538 engineer

15 June 2026
Unprompted review
Vaillant UK logo

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

Rated 5 out of 5 stars

The engineer was very professional

The engineer was very professional. He arrived on time and carried out the repair leaving the work area in a clean and tidy manner.

15 June 2026
Unprompted review
Vaillant UK logo

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

Rated 5 out of 5 stars

I spoke to a Laureene yesterday in…

I spoke to a Laureene yesterday in customer care; she was extremely helpful. And also a lady of her word!
What a credit and asset to the company!

14 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We are so glad to hear about your positive experience with our customer care team. We truly appreciate your kind words and feedback. Thank you for sharing.

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

Rated 5 out of 5 stars

Engineer was excellent

Engineer was excellent, would highly recommend.

12 June 2026
Unprompted review
Vaillant UK logo

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

Rated 5 out of 5 stars

Great engineer went over and above

Great engineer went over and above, very pleased

13 June 2026
Unprompted review
Vaillant UK logo

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

Rated 5 out of 5 stars

Excellent service from the engineer…

Excellent service from the engineer very professional and and customer focused. Also Vaillant phone service excellent Thank you very much

13 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

Thank you for your kind 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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