Immersun Reviews

Very quick delivery but had some problems downloading the installation manual hence only 4 stars

Fitting this to replace a previous model was easy Following the instructions was also easy and it works well with the screen giving you information of its operations The wireless add on has been a little temperamental but that now works so you can track use on your phone If there are no problems i will presume it will pay for itself over a 4 years

Immersun s computer system prevented their being able to contact me via my Hotmail email account but I was phoned a few days later and it was explained how my older unit would have to be disconnected and sent in for investigation As I feel unqualified to do this myself I have contacted my installers but their travel expenses are costly costly and I am pursuing local help to disconnect It s a pity that there is not currently a phone number so that the plumber who installed the immersion heater connected to the Immersun might discuss matters direct with them on the spot to avoid too many people having to come into my home during the pandemic

I have been using an Immersun controller for about 4 years During this time the original company that sold it went into liquidation though I do not know the precise details about that The company now selling this excellent and well thought through controller that allows you to divert solar generation to three different energy storage units seems to have improved the one weak aspect of the original unit the output cable connection point The new controller has a screw down type terminal connection that appears to be more robust instead of the earlier low grade plug in connectors For me I divert power to 2 water heaters and a single storage radiator I have two solar panel arrays with a total output of about 7 4 kW on a good day but angled to provide generation from 4 a m to 9 30 p m in the summer Because the local power supply network will only allow 16 amps to go back down the supply cables to them I had to find a way to keep generating the power I could to maximise my investment Being an electrical engineer I have fashioned another two loads to put heat energy in but their selection in done manually though I plan to make that into a time switched circuit later this spring As that is in tandem with with Immersun the whole installation works well Next is to look at a decent level 20 kWHrs of electrical power storage Over the 4 years I have seen 3 Immersun controllers suffer output terminal degradation The termination points in the equipment for your load connections was a weak part of the original design These would eventually cause hot-spots on the controller motherboard and a fire was the usual outcome I was able to design a different termination arrangement which avoided this hotspot issue The recent failure I had came down to a part of the controller locking the system out due a component failure I believe this can be fixed but I decided to replace the unit with one of the newer type This is working excellently at the moment For a product costing 500 this is a large sum for many householders If you buy other household equipment many now sell such with addition insurance to cover the eventuality of a possible early failure If it was available I would certainly entertain this for the Immersun controller In the meantime I hope the termination improvement does solve the issue of the earlier controllers Time will tell

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

Immersion App login Issue Immersion support notified me of an issue with their server which was affecting a number of users myself included who could not log in The issue was resolved after a while and Anish notified me very promptly of the resolution

Interested to read the reviews as I had my Immersun installed in 2015 It has been excellent but I was having difficulty getting any support I raised a support ticket weeks ago and no response I tried to create an account when I clicked on the email verification I got an error 404 page not found I discovered that they seemed to be owned by Sisem so I tried their number the automated voice says that the number is not currently set up to receive inbound calls However as I saw that there were many good recent reviews on Trustpilot I wrote my own review along the lines of great product but no support Remarkably I had an email response very quickly from their support It seems my Immersun is an obsolete product from the old company which went bust There is support but they are currently very busy So happy to edit this review to reflect that fact I guess they will get around to updating the website when they get staff back from furlough

Returning customerThe unit was similar to my previous Immersun and was easy to install however the casing retaining screws were far to tight and could not be undone with a normal phillips screwdriver I had to resort to a pair of pliers to slacken them of otherwise I would have damaged the screw heads Never had this problem before Tony Holliss 20 05 21

I ve had the Immersun now for about 6 years and it s been heating my hot water without an issue The only problem I ve had recently is logging into the app and Anish is helped each time THANKS

I had a problem with my Immersun but they corrected the problem under warranty The ticket system was a problem but the service team and engineers were very helpful and kept me informed In summary a good company with helpful staff but the web communications system could be improvedThis is my second Immersun and whilst it is easy to use and works well I would prefer a longer useful life