Immersun 

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See what reviewers are saying

Rated 1 out of 5 stars

My power diverter broke down after 18 months and despite claiming warranty for weeks they've now told me they creased trading on 13/1/26. Why they didn't tell me this when I first raised the issue ins... See more

Rated 5 out of 5 stars

I've am a great fan of the Immersun solar diverter, I've recently replaced my old unit after it diverted 10000 KwH of power over 10/11 years. Faultless performance so ordered a new one without hesi... See more

Rated 4 out of 5 stars

I inherited an Immersun (with little info from the previous owner) when I moved into a new home 18months ago. Everything worked smoothly until a recent incident. Once I’d established contact (my web b... See more

Company replied

Rated 2 out of 5 stars

We had an Immersun fitted recently. It appears to work well, so I've no complaints about its basic functionality. But there's a serious caveat. If you want to make use of the Immersun app to... See more

Company replied

Company details

  1. Solar Energy Company

Written by the company

Immersun is a leading provider of energy-saving solutions for homeowners. Our mission is to help individuals and families reduce their carbon footprint and save money on their electricity bills. We are committed to providing our customers with quality products and service that are easy to use and reliable. Our flagship product, the Immersun device, is a smart energy controller that optimises the use of solar thermal energy in domestic hot water systems. By diverting surplus solar energy to heat the hot water cylinder, the Immersun device reduces the need to use electricity or gas to heat the water, resulting in significant energy savings. In addition to the Immersun device, we also offer a range of other energy-saving products, including EV chargers. Our team of experts is always available to help customers find the perfect solution for their needs. We pride ourselves on providing excellent customer service, and we are dedicated to helping our customers save energy and money. With Immersun, you can feel good about doing your part to reduce your carbon footprint and save money on your electricity bills.


Contact info

All reviews

(340)

3 reviews in the last 12 months

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Rated 5 out of 5 stars

Repair of Solarimmersion unit

I have found Solarimmersun very helpful and in particular Anish the support contact person, knowledgeable. I set up a time for a call back from Anish to go through a check list of possible faults. The conclusion after the checks had been completed being that the unit had to go back to their factory for repair.
The product was repaired under warranty and returned within a short period. I was kept updated via their website on the progress of the repair.
The unit has been installed and functioning corrrectly.

21 March 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi AG

Thanks for the review and feedback on our repair service. Glad to hear you're back up and saving!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

Brilliant product for solar users

Been using Immersun for a few years now with fantastic results. Have had some minor issues but very quickly dealt with over the phone. I would recommend anyone who has solar panels to investigate using their excess energy with Immersun.

19 March 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Allan

Thanks for the review and feedback. Happy saving!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

LOGIN PROBLEMS

I had difficulty with logging in and raised a ticket with Immersun support who advised that there were server issues. Anish was extremely helpful and resolved the problem very quickly

16 March 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Ian

We always strive for great customer service so this is amazing to hear! Thank you!

Jacob @ IMMERSUN

Rated 5 out of 5 stars

App problem resolved

Had my immersion for 6 years and would thoroughly recommend it. Had a software glitch with the app (system still fine just couldn’t log in). Raised a ticket and problem resolved, good comms throughout and all back working again. Thanks

11 March 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Allen

Thanks for the review and feedback. Happy saving!

Jacob @ IMMERSUN

Rated 5 out of 5 stars

Great product Great service

I have had an Immersun for several years and the product is excellent.
Recent problems with their servers were notified to me and though it took a while to sort at their end they kept me informed and advised yesterday all was fixed.
I am now back up and running

First class service
Definitely 5 star

10 March 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Bill

We always strive for great customer service so this is amazing to hear! Thank you!

Jacob @ IMMERSUN

Rated 5 out of 5 stars

i just love the new IMMERSUN

i just love the new IMMERSUN. i have had my old one for over 12 years when it packed up. the display is a lot easier. and a lot more information on display.
yes their are cheaper ones on the market, but the back up and customer service is second to none. also my elec man said he had been looking into getting one,and said best on the market.

2 March 2021
Immersun logo

Reply from Immersun

Hi Mrs Edwards

Thank you for your continuous loyalty with us at IMMERSUN the whole team appreciate it! Happy saving!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

Great support - error code on my Immersun…

I had a error code come up on my Immersun device and although the original equipment company (4 Eco Ltd.) had gone bust in 2017 Immersun were happy to help and provide an immediate resolution to the problem - I had feared that they would just request me to upgrade the device (and they're quite expensive).

1 March 2021
Unprompted review
Rated 4 out of 5 stars

Service was prompt and helpful.

Service was prompt and helpful.
But I had to have my property's electrical circuit checked out with a qualified electrician which cost me £20 before the Immersun repair team seemed willing to accept my unit for repair. Then postage back to Immersun repair team cost me over £4. I would have expected that if the fault was found to be in the unit which it was in this case, then these additional costs to the customer would/should have been covered under the guarantee that the unit was still under, as I only had this new unit 3-months. But the unit has now been returned and is working fine. Thank you Immersun repair team.

25 February 2021
Rated 5 out of 5 stars

I have been a user of a Solarimmersion…

I have been a user of a Solarimmersion device for 9 years, having upgraded through to my third device. They have saved me many hundreds of pounds and our gas boiler is not fired up for seven months during the summer. I am pleased to have helped the environment in our small way!
We recently had a smart meter fitted and the Solarimmersion would not work and and we could not read the display which was totally unintelligible. We took the matter up with our supplier and also asked Immersun for assistance. Anish replied by return and I followed his instructions. The device was soon working perfectly again. We have still to hear from our supplier!
A very happy user from East Sussex
BrianH

22 February 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Brian

Thank you for supporting British manufacturing and innovation! Happy saving!

Kind regards
Jacob @ IMMERSUN

Rated 1 out of 5 stars

VERY VERY unhappy with support.

I am having difficulty with my system.

I have raised two support tickets, both were acknowledged and i received a response apologising for some server issues.

That was two weeks ago.

The Support process is simply not working for me, keeps returning me to the same form..

I cannot get a contact phone number.

Am totally amazed that there are positive reports about support.

PLEASE someone at Immersun contact me.

Phil Collins

15 February 2021
Unprompted review
Rated 5 out of 5 stars

Customer support is really good now

Customer support is really good now. Thank you Anish for your help.

4 February 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Jonathan

We always strive for great customer service so this is amazing to hear! Thank you!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

Immersun making noises

I got solar panels and an Immersun device about seven years ago. I had an error message coming up saying error 13 fan fault . My installer has since went bust and i couldn't contact them. I raised a ticket with Immersun and got a very quick response from Anish, who managed to help me and within 10 minutes all was working fine.

Great Service

1 February 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Stevie

We always strive for great customer service so this is amazing to hear! Thank you!

Kind regards
Jacob @ IMMERSUN

Rated 1 out of 5 stars

Not very helpful

Company were not very helpful with regard to their product which had supposedly been repaired within the last 2 months and then again stopped working. They said that it was now out of warranty and would not look at it unless paid a significant non returnable fee.

30 January 2021
Immersun logo

Reply from Immersun

Hi Derek,

We are sorry for your experience however we appear to have no repairs booked under your name within the last 2 months. Please return to your Support Ticket, we have an updated out-of-warranty repairs policy since December which you will find to be more favourable.

Rated 5 out of 5 stars

Speedy response to problem

I was recently unable to log in to my account. A quick check on the Facebook group indicated a server crash & recommended opening a ticket with the support centre.

I did this and within 24 hours I was given instructions on how to log back in again which worked perfectly. This despite reduced workforce as a result of Covid.

I have also been put on a list so that I should get a speedier response should it happen again.

29 January 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Brian

Thanks for the review and feedback. Happy saving!

Jacob @ IMMERSUN

Rated 5 out of 5 stars

Great service yet again

I had a problem accessing the online data so I reported it to Immersun and hey presto Anish had the problem fixed in no time!

27 January 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi David

We always strive for great customer service so this is amazing to hear! Thank you!

Jacob @ IMMERSUN

Rated 5 out of 5 stars

Unable to get access to my Immersun iMac, iPad or iPhone.

Unable to get access to my Immersun on iMac, iPad or iPhone or log. I raised a ticket on Monday evening and received an automated receipt for this.
I received a reply from Anish M at 1400 the following day stating that all had been reinstated after an earlier server crash. I was informed that my account had been reinstated with a new password. I am now able to log in on all 3 devices as normal. I am pleased to report that all my Immersun data for the outage is still preserved and accessible

26 January 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Tom

Thanks for the review and feedback. Happy saving!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

Immersun malfunction - Error 9

Dear Anish,
Thank you very much for your quick response to my query. I can confirm that MyImmersun is now functioning correctly again and I have reset the unit as you advised, which will hopefully cure the intermittent "Error 9" fault occurring - fingers crossed!
Best wishes, Andrew Harrison

26 January 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Andrew

We always strive for great customer service so this is amazing to hear! Thank you!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

👍👍👍

Anish was very patient and explained everything in detail to me so I now have a clear understanding of the how the unit works.
Thanks for such a speedy response to my query

25 January 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Maeve

We always strive for great customer service so this is amazing to hear! Thank you!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

Amazing support!

After a server crash the myImmersun app would no longer connect. Resolved by Anish within 12h of raising a ticket (on a Sunday). Amazing service, thanks a lot!

25 January 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Cam

Thanks for the review and feedback. Happy saving!

Kind regards
Jacob @ IMMERSUN

Rated 5 out of 5 stars

Fantastic customer services customer…

Fantastic customer services customer support. Login issue resolved within 24 hrs and that was over the weekend

24 January 2021
Unprompted review
Immersun logo

Reply from Immersun

Hi Andy

Thanks for the review and feedback. Happy saving!

Kind regards
Jacob @ IMMERSUN

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