I can't speak more highly about Navien. Simply outstanding Customer Service in an age when many businesses, seemingly, couldn't care less. One email, two phone calls and the Engineer came to fix our b... Voir plus
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Had boiler difficulty this morning and the customer service department was great assisting. Navien technical department had a guy ring me called Aubrey and he talked me through the problem. A calm voi... Voir plus
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Boiler was under a warranty and had no fault codes however was leaking carbon monoxide. Navien have refused to honur the warranty as there engineer had inspected the boiler and said it wasnt... Voir plus
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we have had problems getting an engineer for our boiler. Aubrey went above and beyond to help, initially trying to solve the problem by instruction over the phone , then finding an engineer to visit a... Voir plus
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À propos de l'entreprise
- Chaudronnerie
- aussi dans
- Fournisseur d'équipements de chauffage
- Fournisseur de chaudières
- Fournisseur de chauffage
Écrit par l'entreprise
Navien has been in the UK since 2014 and, in that time, has become an established manufacturer of gas boilers for the UK market. Since entering the UK gas boiler market with our NCB-CE gas condensing boiler, we have gone on to introduce the class-leading LCB700 Blue Flame condensing oil boiler, which has become the leading boiler of its type. In 2022, we launched NBC700 ON – part of the NCB ON Range – the first combi boiler capable of delivering hot water to three showers simultaneously for consistent comfort, without temperature fluctuation. We’re also working towards the future. The Navien R290 Heat Pump is our future-proof heating solution, designed for environmentally conscious homeowners. With water heaters, smart controls, and our latest Smart Plus ON AI controller, Navien UK provides the best selection of optimised heating products for homeowners and businesses.
Coordonnées de contact
Building 2, Guildford Business Park, GU2 8XG, Guildford, Royaume-Uni
- 0344 332 23 23
- info@navienuk.com
- navien.co.uk
4,0
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Great product backed by persistent and professional support
I’ve had a mixed but ultimately positive experience with my Navien boiler. Shortly after installation, we encountered an issue where the tap water was overheating. This took two visits from a Navien engineer to resolve.
Not long after, a separate issue developed where the system produced a loud squeaking noise whenever the hot water was turned on. This was more difficult to diagnose and required multiple visits (around five) from John, the assigned Navien engineer.
I want to specifically highlight John, who was consistently friendly, professional, and patient throughout. Although the issue took time to resolve, his attitude and commitment never wavered.
Eventually, the UK Service Delivery Manager became involved, and the problem was successfully fixed on the following visit. In total, it took around 10 months from installation to full resolution, in part as the problem took weeks to reoccur after a fix was attempted.
While the time taken was longer than expected, Navien remained professional throughout, communicated clearly, and stayed committed to resolving the issues. That level of persistence gives confidence in their customer support.
Overall, a good product supported by a team that takes responsibility, even if it takes time to get there.
27 juillet 2026
Avis spontané
Réponse de Navien UK
Hi Michael,
Thank you for taking the time to leave such a detailed review.
We're sorry to hear that you experienced issues with your boiler, but we're pleased we were able to get everything resolved. We really appreciate your patience throughout the process and are delighted to hear your positive feedback about John. We'll be sure to pass your kind words on to him, as well as the wider team involved in resolving the issue.
Thank you again for recognising our commitment to seeing the issue through to a successful conclusion. If you ever need any further support, please don't hesitate to get in touch.
Many thanks,
Ryan at Navien UK
Absolutely amazing customer service
Absolutely amazing customer service. Casini went above and beyond for me to get things sorted can't thank him enough
29 juillet 2026
Avis spontané
Réponse de Navien UK
Hi Garry,
Thanks so much for your positive feedback!
If you need any further support in the future, please don't hesitate to get in touch.
Many thanks,
Ellice at Navien UK
CASINI IS AS LEGEND
CASINI IS AS LEGEND
I couldn't get through to the 'sales team' but I did get call back. Casini called me back. The reason he didn't answer originally is because he was on his lunch break and NO ONE ELSE IS HIRED TO WORK WITH HIM!
Casini's really doing gods work, pay him more!
28 juillet 2026
Avis spontané
Réponse de Navien UK
Hi Mali,
Thank you for taking the time to leave this review, and we’ll be sure to pass your kind words along to Casini.
If you need any further support in the future, please don't hesitate to get in touch.
Many thanks,
Ellice at Navien UK
A prompt and professional service
A prompt and professional service from the onset, our engineer diagnosed and fixed several faults with the boiler. I would definitely recommend.
23 juillet 2026
Avis spontané
Réponse de Navien UK
Hi Jane,
Thank you for taking the time to leave such a lovely review!
If you need any further support in the future, please don't hesitate to get in touch.
Many thanks,
Ellice at Navien UK
Well mannered
Well mannered, very experienced and professional. Same day visit . Exceptional experience. Thank you Chris and Sean
21 juillet 2026
Avis spontané
Réponse de Navien UK
Hi Heather,
Thank you for taking the time to leave such wonderful feedback!
Please don't hesitate to get in touch if you need any further support in the future.
Many thanks,
Ellice at Navien UK
Matthew is a delight to work with and…
Matthew is a delight to work with and Chris is a legend. Consummate professionals and always quick to get you sorted
17 juillet 2026
Avis spontané
Réponse de Navien UK
Hi Nathan,
Thank you for the fantastic review! Providing a professional, responsive service is what we strive for, and it’s great to know we delivered.
Many thanks,
Ellice at Navien UK
Boiler repair was arranged quickly and…
Boiler repair was arranged quickly and the whole process from reporting fault to repair was done within one and a half days (non urgent).The engineer John Higham did a great job and was polite and pleasant.Would recommend the company and engineer with the highest of praise.
16 juillet 2026
Avis spontané
Réponse de Navien UK
Hi Peter,
Thank you for taking the time to leave such a wonderful review.
Providing an efficient and hassle-free service is something we strive for, so it’s great to know we met your expectations.
We’ll be sure to pass your kind comments on to John, and he’ll be pleased to hear that his professionalism, politeness, and quality of work made such a positive impression.
We truly appreciate your support and look forward to assisting you again should you ever need us in the future.
Many thanks,
Ellice at Navien UK
Incredible support -Casini is an Asset to the team.
The speed and efficiency of his assistance were truly amazing. What truly stood out was his pure dedication to helping me resolve an issue. That was might i add not his job role.
He went well beyond staying completely focused on helping me.
Casini's commitment to supporting agents in Navien makes a massive diffrence.
9 juillet 2026
Avis spontané
Réponse de Navien UK
Thank you for taking the time to share such thoughtful feedback, and we’re delighted to hear about your positive experience with Casini. Going above and beyond to support others – even outside of his direct role – is exactly the kind of commitment we strive for.
Thank you for choosing us, and if you ever need any further assistance, we're always happy to help.
Many thanks,
Ellice at Navien UK
Absolutely awful don’t go near them
Absolutely awful don’t go near them
I am so annoyed we have had no boiler for 9 days have called numerous times
Engineers have been 3 times no parts
I have asked for it to be taken out
Boxt don’t help either all a terrible service
My husband has a operation in 2 days I have told them to come and remove it by tomorrow or a plumber will remove it so I can get a new boiler not a navies one either
As how is he supposed to keep wound clean and if it takes this long in summer
Well I definitely do not want navies in winter
So I don’t want it fixed it is been removed
Worst company ever
21 juin 2026
Avis spontané
Réponse de Navien UK
Hi Sean,
Thank you for taking the time to leave such a detailed review. We’re sorry to hear about your experience and understand your frustration.
We would really like the opportunity to look into this further. Please could you contact our complaints team directly at complaints@navienuk.com with your details, so we can investigate this?
Thank you again for your feedback.
-Ellice at Navien UK
I have only ever received helpful advice…
I have only ever received helpful advice from Navien's Service Department with the on going problems with our boiler, which in hind site has proved to be down to the botched installation of the unit in the first place, the Company who did the installation and commissioning are no longer listed by Navien as installers, I'm not surprised!!
Navien arranged as a goodwill gesture to have their Service Engineers visit to check the system now the remedial work had been completed, not by the installer company I might add, after a couple of adjustments by them the system appears to be now working as it should.
I cannot thank the Service Manager and his team enough and particularly the Engineers who came, it is a great relief to finally talk to someone who will talk to a lay person so that they understand what is happening.
I have only praise for them, well done.
22 juin 2026
Avis spontané
Réponse de Navien UK
Hello,
Thank you for taking the time to share your experience. We’re glad to hear that the issues with your boiler have now been resolved and that our Service Department was able to support you throughout the process.
Customer satisfaction is extremely important to us, and it’s great to know that our team’s efforts have helped restore your confidence in the system. Thanks again for your feedback and your patience throughout the journey.
Many thanks,
Ellice at Navien UK
How service should be
Engineer called 1/2 Hour before arrival to say he was on his way.
Engineer was polite and courteous and fixed the problem in 30 minutes and explained what to do if I have any further problems.
Brilliant!
24 juin 2026
Avis spontané
Réponse de Navien UK
Hi David,
Thank you for sharing your feedback. We're glad to hear that your engineer was polite and courteous and quickly fixed the problem.
If you ever need any further assistance, we're always happy to help.
Many thanks,
Ellice at Navien UK
Excellent service
RHYS come to our property yesterday and fixed our boiler. He was very helpful, explained the problem and made recommendations to improve the efficiency of the boiler. Excellent service and support provided as I only contacted the company in the morning and they had a booking secured 30 minutes later for later that same day. Would recommend RHYS and Navien.
19 juin 2026
Avis spontané
Réponse de Navien UK
Hi Mary,
We appreciate you taking the time to leave such a wonderful review. It's great to know that we were able to arrange a same-day appointment and meet your expectations.
Thank you for choosing us and for recommending both Rhys and Navien. If you ever need any further assistance, we're always happy to help.
Many thanks,
Ellice at Navien UK
Not reliable - considering replacing after 4 Years!
Left without a functioning boiler and no way of getting help! Stay clear of this type of boiler! We had a whole new central heating system in 2022. Pro Plumb (Navien's number 1 Installer) fitted it for us. Since then it has broken down four or five times. We have discovered you need specialist engineer to service and repair it - they are hard to find. We currently have two leaking valves that need replacing inside the boiler. Navien say it is because they have been installed upside down so will not repair, ProPlumb will not respond to our calls, we can not find anybody who is willing to touch this system. Consequence, we are now on week three of no hot water with nowhere to go. Back to the Victorian times with a small child living in the house. I feel like crying!
17 juin 2026
Avis spontané
Réponse de Navien UK
Hi Sarah,
Thank you for taking the time to leave such a detailed review, and we’re very sorry to hear about your experience and the difficulties you’ve faced – especially being without hot water for such an extended period with a young child at home.
We take feedback like this seriously and would like the opportunity to investigate your situation further. Please contact our complaints team at complaints@navienuk.com with your contact details, installation address, and any relevant information regarding the installation and service history.
Once we receive your email, a member of our team will review and be in touch as soon as possible.
Many thanks,
Ellice at Navien UK
Domestic boiler warranty repair.24/4/26
Contacted me quickly when called. Convenient appointment made. Engineer kept in touch & turned up in time. Repair completed & everything tidied & clean. Very efficient.
24 avril 2026
Avis spontané
Réponse de Navien UK
Hi John,
Thank you for your feedback.
We’re delighted to hear that the whole process was smooth and efficient, from booking your appointment through to the completed repair. It's great to know that our engineer kept you informed, arrived on time, and left everything clean and tidy once the work was finished.
If you need any assistance in the future, we're always happy to help.
Many thanks,
Ellice at Navien UK
I didnt have no hot water
I didnt have no hot water, spoke to someone called albury he guided me through step by step instructions to put pressure up in my boiler, should a great help and very patient and knowledgeable
8 juin 2026
Avis spontané
Réponse de Navien UK
Hi Sandra,
Thank you for taking the time to leave such a positive review.
We’re pleased to hear that Aubrey was able to help you restore your hot water and guide you through repressurising your boiler. We'll be sure to pass on your kind comments. Thank you for choosing us, and please don't hesitate to get in touch if you need any assistance in the future.
Many thanks,
Ellice at Navien UK
Great service unlike British Gas who…
Great service unlike British Gas who where trying to find ways out of doing actual job ,,
8 juin 2026
Avis spontané
Réponse de Navien UK
Hi William,
We truly appreciate you taking the time to share your experience and thank you for choosing us. If you need any assistance in the future, we're always happy to help.
Many thanks,
Ellice at Navien UK
Navien LCB 700 Oil boiler .
Navien LCB 700 Oil boiler .
First class service once again from phoning Navien to booking a call-out to Engineer attending.
Engineer very knowledgeable and it would appear issue sorted.
Thanks
4 juin 2026
Avis spontané
Réponse de Navien UK
Hi Glenn,
Thank you for your fantastic feedback. We're delighted to hear that you received first-class service from our team, from your initial call through to the engineer's visit.
It's great to know that the booking process was smooth and that our engineer's knowledge and expertise helped resolve the issue with your Navien LCB 700 oil boiler.
We truly appreciate you taking the time to share your experience and thank you for choosing us. If you need any assistance in the future, we're always happy to help.
Many thanks,
Ellice at Navien UK
Praise for Aubrey on navien technical team.
My thermostat needed fixing yesterday and just wanted to say that I was put through to the technical team. I cannot praise enough a man named AUBREY he was so patient in going through setting it right for me, I botched it up by dropping it at one stage but he was so calm and helpful, he deserves a mention.
1 juin 2026
Avis spontané
Réponse de Navien UK
Hi Joyce,
Thank you so much for taking the time to leave such as wonderful review.
We're delighted to hear that Aubrey was able to help resolve the issue with your thermostat and that he provided such patient and reassuring support throughout the process. We'll be sure to pass on your kind comments and recognition to Aubrey.
Thank you again for choosing us, and please don't hesitate to get in touch if you need any further assistance in the future.
Many thanks,
Ellice at Navien UK
Fabulous
Super quick- spoke with Aubrey over the phone - he was able to talk me through sorting out onev of the issues and go my boiler back on again. Then sorted someone to come look at the leak.wad very patient with me, lovely bloke, easy company to deal with.
28 mai 2026
Avis spontané
Réponse de Navien UK
Hi Ruth,
Thank you for taking the time to leave such a kind review. We’re really pleased to hear Aubrey was able to help get your boiler back up and running over the phone and arrange for the leak to be looked at quickly.
It’s great to know you found him patient and helpful, and that your experience with our team was an easy one. We’ll be sure to pass your feedback on to Aubrey.
Many thanks,
Ryan at Navien UK
Great after sales service for my LCB…
Great after sales service for my LCB 700 combi boiler. The engineer Rhys carried out a thorough service of my boiler and obviously knows his stuff.
18 mai 2026
Avis spontané
Réponse de Navien UK
Hi Ken,
Thank you for taking the time to leave a review. We’re really pleased to hear you were happy with the after sales service for your LCB700 boiler and that Rhys provided such a thorough service.
We’ll be sure to pass your kind feedback on to him.
Many thanks,
Ryan at Navien UK
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