Fox ESS UK Reviews 

219
•
TrustScore 4.5 out of 5

4.6

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Review summary

Created with AI, based on recent reviews

Considering 207 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the dedicated support staff for their incredible patience, clear explanations, and professional ability to resolve complex technical issues swiftly during calls. Many people note that installing and managing their solar and battery equipment is completely straightforward, with helpful engineers smoothly sorting out physical connections. Though some customers encountered recurring hardware glitches, such as batteries failing to charge properly or staying offline for weeks. A few reviewers also mentioned facing deep frustration with persistent system malfunctions, missing components, and occasional communication hurdles when waiting for technical assistance.

What people talk about most

Staff

Consumers find staff to be exceptionally helpful, praising representatives for their patience, clear... See more

Customer service

Reviewers mention positive feedback about customer service, highlighting that representatives are extremely... See more

Product

Clients share ambiguous opinions on product performance, with some reviewers praising the reliable hardware,... See more

Service

Customers had positive experiences with service, frequently praising the rapid remote assistance and helpful... See more

User experience

Reviewers highlight positive aspects of user experience, expressing appreciation for how easy it is to manage... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Had a 41 panel solar roof with x2 FoxEss wall batteries. Spoke with Redell today, Lewis last year. Their customer service is ON POINT. Remotely came in & fixed my issue, done & dusted in 10 minutes..... See more

Company replied

Rated 5 out of 5 stars

I was at my wits end trying to resolve my data logger connection myself. Once I had contacted customer help services I had all the help I needed. Bernard was extremely patient with me as I'm not super... See more

Company replied

Rated 5 out of 5 stars

Thank you Fox for fixing a faulty system under the warranty. They truley care about their customers, even after sale. Big thanks to their engineer, Lewis who replaced the faulty invertor and batter... See more

Rated 5 out of 5 stars

We had a problem with our mode scheduler which we tried to fix ourselves without success. Bernard at Fox ESS was very helpful and our problem was solved! I just wish we had rung earlier and not spe... See more

Company replied


Company details

  1. Energy Equipment and Solutions
  2. also in
  3. Electric Vehicle Charging Station
  4. Solar Energy Equipment Supplier

Written by the company

Fox ESS UK Ltd. is the UK arm of Fox ESS, a global manufacturer of solar inverters, battery storage systems, and energy management solutions. We offer a wide range of innovative, high-performance products designed to support the transition to clean, renewable energy across residential, commercial, and industrial sectors.


Contact info

4.6

Excellent

TrustScore 4.5 out of 5

219 reviews

5-star
4-star
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1-star

No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 94% of negative reviews

Typically replies within 1 week

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4.6

All reviews

(219)

193 reviews in the last 12 months

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Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

API key?

Kendall patiently fixed my problem. AI tells me i need an API key and I clumsily tell Kendall and he gets it and sorts it for me. Effective and polite. Very good service.

August 6, 2026
Unprompted review
Rated 5 out of 5 stars

I am currently on my sixth fox…

I am currently on my sixth fox installation I have had a few teething problems but this is to do with learning on each occasion I have a problem I have got through to technical support usually within five minutes and they have managed to sort out the problem within 20 minutes they always do a firmware update after sorting out the problem and I am very impressed with the technical support it is a good product with excellent technical support thank you to all the Fox team

August 6, 2026
Unprompted review
Rated 5 out of 5 stars

Great company

We've installed over 300 Fox ESS systems, they are fantastic, user and installer friendly.
The UK support lines are easy to get hold of, Agush has been particularly helpful recently

August 6, 2026
Unprompted review
Rated 5 out of 5 stars

Great Kit, Great Price.

Fox is a pleasure to install and they offer great value for my customers. The kit is reliable and works well. They also have great customer support/technical helpline, Bernard is especially helpful and is my go to contact.

August 5, 2026
Unprompted review
Rated 5 out of 5 stars

Recently had the solar panels and solar…

Recently had the solar panels and solar battery and inverter installed ! Had a minor issue with the app but this guy called Bernard went above and beyond, he was very professional and very helpful..can't thank this guy enough,, he's a great asset to the team. Would highly recommend this company..Thanks.

July 29, 2026
Unprompted review
Rated 2 out of 5 stars

More interested in cash than customers

Sadly Fox ESS seem far more interested in selling kit than dealing with customers problems.
What they totally fail to grasp is that putting faults to rights is a very effective way to test and improve your equipment.
Happy customers are an invaluable part of any sales and marketing operation.
Emails bounce, texts go unanswered, very very frustrating.

July 22, 2026
Unprompted review
Fox ESS UK logo

Reply from Fox ESS UK

Hi,

We're sorry to hear you've had this experience. We understand how frustrating it is when you're trying to get support and don't receive a response.

This isn't the level of service we aim to provide. If you're still experiencing this issue, please send us a private message with your details or support reference, and we'll make sure the right team looks into it.

Thank you for your feedback, and we appreciate you bringing this to our attention.

Rated 5 out of 5 stars

I had an issue with what I thought was…

I had an issue with what I thought was the inverter. Spoke to a few guys but eventually got through to Lewis. He was brilliant. Got in touch with me through WhatsApp so I could send him videos and photos of the issue. Then also rang me back to find out if the issue was resolved. Never had someone who is so attentive with customer service. Problem was resolved as well

July 20, 2026
Unprompted review
Rated 1 out of 5 stars

Still waiting replacement battery RMA too slow

Very helpful Engineer called and confirmed we needed a new battery and promptly ordered it. I’m still waiting my RMA its been 11 days now and not heard anything!! Ticket number 163446. I’ve been in communication with the engineer ( which has been very helpful) but he hasnt had any feedback either from the RMA. Is there a problem with Fox ess that the RMA is too slow to respond!! We are not getting the best service especially during this sunny weather.

July 10, 2026
Unprompted review
Fox ESS UK logo

Reply from Fox ESS UK

Hi William. We sincerely apologise for the delays. I understand the replacement was despatched from us on July 13th - this delay is not in line with our usual RMA response times and was down to a stock and logisticial issue - which itself is very unusual. Ultimately, the replacement was not issued in the time frame we would expect, and we can only apologise for that.

Rated 1 out of 5 stars

Extremely disappointed with the level of customer service and after-sales support from Fox ESS.

Extremely disappointed with the level of customer service and after-sales support from Fox ESS.

We reported a faulty piece of equipment over a week ago and, despite repeated attempts to get an update, we still have no clear indication of when the replacement parts will be supplied. The lack of communication has been frustrating, and we're left chasing for information rather than being kept informed.

As an electrical contractor, our reputation depends on supporting our customers quickly when issues arise. Delays like this reflect badly on us, even though the equipment failure is outside of our control.

The products themselves may be competitively priced, but reliable warranty support is just as important. Unfortunately, based on this experience, it has made us seriously reconsider whether we continue specifying Fox ESS products on future projects.

I hope Fox ESS takes this feedback seriously and improves its warranty process and customer communication.

July 3, 2026
Unprompted review
Fox ESS UK logo

Reply from Fox ESS UK

Hi Ryan. We are sorry to hear that you are disappointed with the service received. When a ticket is raised for RMA, there can be a few working days delay before that is processed internally and an authorisation to despatch is issued. I understand this has now been processed and the ticket owner has updated you.

Rated 5 out of 5 stars

Steven was super helpful when an…

Steven was super helpful when an inverter had a fault and needed to be replaced. He took the time to explain and guide us through the issue and helped in rectifying this problem quickly and efficiently.

Thank you for your hard work!

July 2, 2026
Unprompted review
Rated 5 out of 5 stars

Firmware updates

We had multiple firmware updates and issues with a commercial installation yesterday involving an AI link, 3 x Fox pro inverters & 9 batteries, all of which Lewis in tecnical support was excellent in helping us overcome these problems. We also had an update on the batteries firmware having being completed in the back ground long after we had left site.
We discussed the latest firmware updates being uploaded onto the Fox Tech website and us taking a copy of these to site for future installations being commissioned.
Many thanks,
Andy Jones
Severn Valley Renewables

July 2, 2026
Unprompted review

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