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... Mehr ansehen
Immersun
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Das sagen Bewerter
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... Mehr ansehen
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... Mehr ansehen
Unternehmen hat geantwortet
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... Mehr ansehen
Unternehmen hat geantwortet
Unternehmensdetails
Vom Unternehmen geschrieben
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.
Kontaktinformationen
Vereinigtes Königreich
- www.immersun.co.uk
Excellent piece of kit for the price
Excellent piece of kit for the price. Easily installed and RSS cards work a treat for guests coming to stay.
Customer service was quick and responsive.

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great customer service and ec charger…
great customer service and ec charger working better than any others ive bought

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Poor instruction book made clear
My 9 year old Immersun instruction book was not very clear on how to activate a timed boost or how to use more than one timer. The service team were very helpful and sorted this out for me.
Hopefully the newer instruction book will have been edited to make it easier to understand by the customer

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Customer " service " is a misnomer
Like many recent reviews , I had an old version of the diverter , which lost it's display and was talked into buying the latest " improved " unit. On arrival this would not install , with an error saying could not find the immersion heaters . The old unit , which had been fixed , was replaced , and worked perfectly. I returned the new version to Immersun , which was tested , and returned to me " having no fault " It was fitted again , with exactly the same result . The old unit was refitted , and worked perfectly. Immersun would not accept responsibility saying the fault lay in the system outside the unit. Despite being asked numerous times how the old unit could work and the new one didn't , they chose not to answer . After 4 attempts installing the new unit by 4 different electricians and having the immersion heaters circuits tested as OK , I returned the unit for a refund. It was sent back to me with a message saying that as I had had it for nearly a year no refund was available and " discussion was closed" . I took the matter to the Small Claims court and my money was refunded by immersun at the abitration process . Form your own opinion about their products and customer service , but last time I checked reviews , 12% were 1 star with scathing comments about product and service. PS .. the old unit is still working , I have hard wired it to the remote sensor in the garage , removing the wifi bridge .

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Excellent service
Excellent service, took time to research manuals for obsolete products and emailed them to me!!

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Our first Immersun blew after about 3…
Our first Immersun blew after about 3 years which we bought with the solar panels. I enquired about repairing it but was talked into the ‘improved’ version from Immersun, direct from the manufacturer. This one has lasted just over 3 years and has blown up. Immersun offered yet another ‘improved’ unit for £450 or a repair for approx £200. I am trying to repair it myself being an electronics engineer but the SMD’s are tricky to work on. I will not buy another one of these ever again. There are far cheaper devices on the market, some with a 10 year warranty which I will buy should my repair fail. My advice is shop around for a cheaper device with a longer warranty.

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Worked great for a few years then blew
Worked great for a few years then blew. Burnt out a part and blew the fuse. What I spent on the unit I’ve about broke even on free hot water.

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Excellent support: knowledgeable, patient & helpful
In 2015 upgraded our domestic CH/HW system including the install of a twin coil unvented hot water tank. The intention was then to install solar PV and additionally solar thermal HW – green and energy security.
Some challenges re fitting roof solar thermal panels and opted to take advantage of otherwise `wasted` energy exported to grid to install Immersun diverter. This device has worked really well for the 8 years:-
• The diverter was a substantial cost saving over the solar thermal panels.
• For several months a year we heat our hot water at nil cost and helps for the remainder of the year. This makes me smile!
• With the subsequent installation of a smart meter it has been reassuring to monitor how responsive, particularly on partially cloudy days, the unit is to availability of spare electricity.
Having performed without missing a beat as promised for 8 years the main unit (have a wireless sensor) then failed to work correctly. The original contractor attended twice but failed to resolve.
Advice, guidance and support over the phone resolved issue and I was impressed with the service (Anish). I could not have asked for more.

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Dont buy Immersun solar converter
I believe this product is useless. it is difficult to install, the support is lacking, it is impossible to discover the savings made, if any, the cost of the unit will never be recovered. We have had it uninstalled as there is more benefit from FIT payment than Immersun.

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Avoid this company at all cost
Avoid this company at all cost. I have tried three different units. One failed to power on straight out the box. Immersun sent a replacement within a week to be fair. Unfortunately within a couple of months this unit burnt out. The replacement has again caught fire this morning. Three units within a year the original cost £500. Avoid !!!

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Immensely frustrated …
Immensely frustrated with the poor customer service. I have had an outstanding question on their ticket system since February (and it’s now June) and keep getting the response that there are ‘no updates as yet from the developer’. All I’m seeking is a definition of the web reporting categories which don’t currently appear to make sense. Surely a developer doesn’t need to take 4 months to respond?? The only avenue to complain is with the email ticket system through which I keep getting the same answer……A good product let down by very poor service.
Thank you for replying to me even though it is several more months after my review. However, despite the apology, you still haven’t been able to answer the basic question. This leaves me having spent several hundred pounds on equipment to read my usage but without any guidance on how to interpret your definitions….so overall my investment is virtually useless. Very hard to recommend the product or customer service on this basis

Antwort von Immersun
I highly recommend Immersun
As a homeowner, I was looking for a way to reduce my carbon footprint and save money on my electricity bills. Immersun's team helped me find the perfect solution, and I am extremely happy with the results. Their products are easy to use, reliable, and have helped me save a significant amount of money. I highly recommend Immersun to anyone looking to save energy and money.

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Failed after 18 months.
Failed after 18 months due to an internal flash over. On inspection it looked like a poorly trimmed component lead had been the source of long term arcing, which eventually led to a flash over.
Immersun were not supportive and they offered a no guarantee repair attempt for £180, but I reckoned that the damage was too bad and that this would be a waste of money.
I bought a Myenergi Eddi for less than £400 and it comes with wireless connectivity built in. It’s running well.
Sorry Immersun, you need to look carefully at your reliability and your specific responses. You could have used my failed device as a valuable learning experience.

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Very patient and fixed me quick
Very patient and fixed me quickdoes I did not say this, I said does not work and not much help. It still does not work!!

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Fast response to my query and clear advice you cant ask for more.
fast response to my query and good clear advice, you cant ask for more.

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The diverter that never worked
Sadly bought a Solar diverter and from installation of failed. It was returned and Repaired!! However again after installing it did not work saying the immersion heater was faulty. It was returned again with the response of no fault found. I replaced the immersion heater twice and new cabling but it still failed
I now have a never functioned diverter that has cost me in excess of £400 the Immersun have washed their hands of.
I have now bought a MyEnergy Eddi and it worked perfectly on the same install.

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The new app is not working with many…
The new app is not working with many problems. If you want to control remotely and or see current or historic data it’s impossible. If you just want a diverter then it works from the front panel. I would not buy this manufacture again because of the badly working app.

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Just three years old failed Brocken…down my immersun
Just three years old failed Brocken internal wire burnt out second immersun has failed unhelpful
Staff will not bye again.
Waste of money they have no fitting
Service

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Excellent friendly service
Excellent friendly service, very knowledgeable and patient.

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Quick, accurate and relevant tech support
Wow! When my Immersun came up with a funny message, I thought it was the end. However, I tried the Immersun tech support and they have been brilliant (this means patient and using words of less than 1 syllable!). They managed to talk (easy notes) me through all necessary procedures. So happy that my unit is working again - thanks so much to Immersun tech support.

Antwort von Immersun
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