Vaillant UK Reviews 

23,385
TrustScore 4.5 out of 5

4.6

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Review summary

Created with AI, based on recent reviews

Looking at 1,566 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the professional engineers for being punctual, extremely polite, and taking the time to thoroughly explain repairs. People also highlight the prompt response times, highly efficient support, and practical advice given by staff when resolving various heating system issues. Some reviewers were not happy with the communication and contact processes experienced during inquiries. A few customers experienced frustrating delays, inflexible scheduling policies, or difficulties when trying to arrange timely support appointments. Others noted occasional problems with equipment reliability shortly after installation, leading to added inconvenience and frustration.

What people talk about most

Staff

Reviewers highlight positive aspects of staff, noting that engineers and support agents are consistently... See more

Service

Clients share positive opinions on service, highlighting prompt appointments and professional engineers who... See more

Customer service

Customers consistently note positive experiences with customer service, highlighting great care and helpful... See more

Product

Users describe ambiguous interactions with product, reflecting a wide division in customer experiences. While... See more

Customer communications

Customers had ambiguous experiences with contact, as some people report repeated attempts to reach support... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Sam the engineer (#508) turned up to look at our heat pump when he said he would. He was very polite, helpful and explained what the problem was and what he had done to fix the issue. He even wore sho... 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

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


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

(23,385)

1,494 reviews in the last 12 months

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Rated 5 out of 5 stars

Commissioning Vaillant heating system,

Commissioning Vaillant heating system,
the two engineers that commissioned our system were very professional, thorough, polite and obviously knew their job. Thank you, Matthew #566.

18 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We're delighted to hear our engineers were professional and thorough during your heating system's commissioning. Thank you for your positive feedback, we'll make sure that Matthew and his managers receive this.

Kind regards, Vaillant

Rated 5 out of 5 stars

Very knowleadgeable engineer. Thanks Chris. 443

Very knowleadgeable engineer, respectful, cleaned up afterwards, always smiling. Thanks Chris for looking after my air source heat pump equipment. Engineer 443.

19 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

Thank you for your positive review.
We are delighted to hear our engineer provided such excellent service. We appreciate your feedback and will ensure to pass this over to Chris and his managers.

Kind regards, Vaillant

Rated 5 out of 5 stars

Danny (#519) has been at ours today and…

Danny (#519) has been at ours today and worked 4hrs straight to fix a fault on our boiler. Very pleasant and tidy, really appreciate his help and work!

19 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We appreciate your feedback and are pleased to hear about the pleasant and efficient service you received.
We are proud of our team, and will be sure to pass your kind words onto Danny and his managers.

Kind regards, Vaillant

Rated 5 out of 5 stars

Really great service

Really great service, forgotten his name but his engineer number was A717 lovely bloke, talked us through the water quality of our system, PH levels and any signs of corrosion within the pipes. All clear. Would recommend. 👌

19 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We are delighted to hear about your positive experience with our engineer. Thank you for sharing your feedback; we appreciate it and will be sure to pass this on to the engineer.

Kind regards, Vaillant

Rated 5 out of 5 stars

A great customer experience and lovely…

A great customer experience and lovely engineer who resolved a bad booking experience

19 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We are delighted to hear about your positive experience with our engineer.
Thank you for your feedback.

Kind regards, Vaillant

Rated 5 out of 5 stars

Excellent customer service from first…

Excellent customer service from first engagement to fixing the boiler. Huge thanks to both engineers #810 Aaron and
#817 Martin.

19 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We're so pleased to hear about your excellent customer service experience from start to finish.
Thank you for your positive review, we will be sure to pass your feedback on to Aaron, Martin, and their managers.

Kind regards, Vaillant

Rated 5 out of 5 stars

Excellent service from start to finish

Excellent service from start to finish. He fixed my boiler quickly and efficiently, explained everything clearly, and left everything tidy. Reliable, professional, and friendly. Highly recommended.#553

19 June 2026
Unprompted review
Vaillant UK logo

Reply from Vaillant UK

We appreciate you sharing your positive experience. We are delighted to hear our service was excellent from start to finish, and that our engineer was professional and efficient.
We will be sure to pass your feedback on to the engineer and their managers.

Kind regards, Vaillant

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

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