Below is a selection of comments left by our users. If you wish to add your own testimonial to this section, please use the form opposite.
D Stewart 11/06/16 Very happy with the product.Clear instructions, helpful technical staff and excellent quality.
Mr S Lumb 03/05/16 fantastic bit of kit best thing since sliced bread!
Mr S Russell 25/04/16 Great idea and a great product. The T1060 is a huge improvement over the previous model. It's much easier to use.
Mr Ruthven 22/04/16 Simple, quick to install and makes even better use of our solar panels.
Mr G Young 19/04/16 Amazing piece of kit! As expected so far I am really impressed with the unit .. I am actually obsessed with checking it the whole time , I can now fully utilize all power produced.
Mr J Shorrock 19/04/16 Well done again on an excellent and innovative product, I hope it sells like hotcakes!
Mr A Valente 13/04/16 Great product by the way, my hot water has been turned off for the last 2 months! smile emoticon
Mr C Leake 08/04/16 Good build quality and well thought out method of connecting the unit.
Mr N Fowler 04/04/16 I should like to congratulate you and the rest of your team for the excellent product and support. It was money well spent and I estimate that I will recoup my expenditure with around 18 months
Mr N Fowler 04/04/16 It is refreshing to be able to unpack a new product, that installs so easily. It definitely does what "it says on the box" and is also, as said in the electronic industry, a "plug & play product"
Mr B James 02/04/16 Product very well built and easy to install. The wireless sensor makes installation very easy. Wireless range is excellent. First day of operation provides a tank full of hot water. I am delighted.
Mr P Colmer 29/03/16 Delighted with this piece of kit and the backup when it threw a small wobbly. Thank you Keith. Perfect service
Mr B Woolley 30/03/16 Great bit of kit; looks well made and designed for many years of hassle free savings
Mr A Marsh 24/03/16 Very pleased with the product, easy to install and set to work
Mr J Kither 14/03/16 Yes, what a wonderful company you are.
Mr J Thomas 14/03/16 This is a well thought out device, easy to install, great instructions and a simple but comprehensive interface too.
Dr. M.G. Senior 13/03/16 Remarkably easy to install and set up, especially the immerLINK
Mr R Beerman 08/03/16 Only had a limited amount of sunshine so far but was doing what it says on the tin and switched to heater 2 but looking forward to seeing the results in the summer.
Mike 23/02/16 Having been in a customer focused technical support job for most of my life, I often find calling technical support departments myself a very trying process. Not being able to actually speak to the technical team, messages being taken by front line non-technical staff and promised return calls no being made.
When dealing with 4eco's technical team that paradigm could not be further from the truth. The technical chaps are the ones who actually answer the phone, they have excellent product knowledge and they do call back with the answer if promising to do so. I'm using nearly all the functions of the immerSUN device; so I've now had cause to ask their advice on a number of occasions in order to use it to its fullest potential. Every contact has provided me with sound workable resolutions.
I would not hesitate for one second to recommend the immerSUN device or the level of service that 4eco they provide. Well Done!
Mr S Russell 20/01/16 Love the product, it's a really good idea.
J & C Robb 16/02/16 Great unit....love that it tells me the total usage of the house!
Mr B Haire 15/02/16 Brilliant product.
Mr B Harding 09/02/16 Your customer service is second to none. On both the telephone and by our visits our questions have been answered and matters resolved. Highly recommended. Regards Brian
Andy B 29/01/16 If you've got solar you've got to get a immersun!
Mr C Chapman 28/01/16 Our immerSUN has now been in for 8 months and has already diverted £138 equivalent kWh back into house, so should pay for itself in 2 years.
......... is amazing at diverting 'leccy to our hot water, and to a secondary circuit for turning on an oil filled radiator as a heat dump. All good stuff, so immerSUN is well worth the money!
Mr B Spencer 27/01/16 Excellent replacement for the Mk1 unit previously installed. Great service provided by immersun at all times.
Mr D Burges 27/01/16 My immerSun on my 3kWp system diverts enough to not need the gas boiler at all for hot water between April and September. Great piece of kit.
Mr J Jones 25/01/16 The support and help provided by your technical team (Keith )was superb. I will therefore recommend your company to anyone without hesitation.
Mr D Bodsworth 23/01/16 Great technology - looking forward to plenty of 'green' hot water in the future!
Mr G.Beaty 20/01/16 Early days, but hopefully will make best use of electricity being produced. Good feedback from friends who already have immerSUN installed
Mr G Blount 18/01/16 ......Best described as a fantastic product.
Mr J Hall 16/01/16 Works as it is supposed to unlike the Solar iBoost unit the installer first installed.
Mr J Pollack 15/01/16 I am delighted with it - good performance and clear screen. There is now a fault but your technical team are being most helpful.
Mr G Judge 13/01/16 Brilliant concept; easily and quickly installed.
Only heard about the product when our installer included it in a solar PV system he fitted to our daughter's house.
So far, so good...
Kevin Smith 28/12/15 Hope I don't get penalised for late application. Yet to start reaping the benefits, but what I have experienced so far is fantastic.
Mr G Parris 18/12/15 Excellent, well built product; Good documentation; Easy to install. Highly recommended. Will want to add the remote monitor shortly.
Mr B Milner 07/12/2015 "The device was installed with the help of a very competent DIY friend.
Phone help from you regarding a small problem was very much appreciated."
Mr J BUCKINGHAM05/12/2015
Researched the product, was directed at a local supplier / installer and been saving money and the environment ever since
Mr J BUCKINGHAM05/12/2015
Researched the product, was directed at a local supplier / installer and been saving money and the environment ever since
Mr J Bradwell 04/12/2015 I had a few issues with the fitting of the unit, but the technical team were excellent, very helpful, knowledgeable and explained where I was going wrong. Great service over the phone - other companies could learn from this.
Robert B., London 03/12/2015 The immersun is essential for users of solar pv panels. We love it.
Philip H This is a fantastic piece of kit that does exactly what it says on the tin, and the manufacturers have supplied me with all the info i needed. Am delighted with the product.
A.C, Poole Our immerSUN was collected, so delivery does not apply. The product is excellent, making great savings whenever the sun shines. The helpline was also fantastic, helping me with a wiring fault on my part.
H C Newry Great product, didn't buy online, came with solar panel package, brilliant, any house with renewable energy should have one.
Andy Superb piece of equipment, and good customer contact with pro-active suggestions.
Mr P Haussauer An excellent product. The cream on the cake for any PV system. Use over 80% of the units you generate by heating the domestic hot water.
Mr S Patel Good after sales. They care about their product and brand
Mr K Towzer Excellent product and customer service
G.C There are a few devices out in the market that heat water but the immerSUN was far superior to anything on the market. Gives you an accurate reading of what you are saving as you input what you are paying per KW. Easy to use and install. Warranty is excellent. Customer Service is excellent if there are any issues. All in all, extremely happy with my purchase of the immerSUN.
Mr G Harrison The immersun is a very good product that does all that it claims to. But for me the most impressive area of the product lies in the after sales service. I did have an initial problem with the product but the support, no quibbles replacement and help was excellent. I would have no reservation whatsoever in recommending this product. The team behind it are 5 star.
S Weale This immersun gives us plenty of hot water - there is no need to switch the electric water heater on at all, so saving a lot of bills. thank you.
Mr N Ledoux Excellent company to deal with and a First Class product. The remote monitoring is also very good.
Mr J Ford Fabulous peice of kit! - I am really impressed...
Mr C Howting Brilliant technology, well made, easy to use, excellent user manual, love the web-based ability to monitor PV activity!
Mr B Whitehead Some of the best instructions & easiest self-install routines that I have found in any device. Immediate results.
Mr S Spurrier "It's an excellent, well designed product.
I have also been extremely impressed with the excellent support when I raised a couple of technical queries."
Mr H Mundie A fantastic piece of kit, we decided to keep our DHW to run in line with C/H system it is working great.
Mr J Maubach A brilliant idea to utilise surplus energy, I look forward to seeing it working.
Rob Simmons We LOVE ImmerSun!
It's been 173 days since we used ANY additional grid power to heat our water. We've got two children, aged 5 years and 4 months so we think that's a great achievement. Would love to get to 365 which would make us completely self sufficient during daylight hours.
Just wanted to let you know how brilliant this is!
Looking at the remote monitoring but we're not sure how difficult this is to 'wire in' as we've gone for the wireless option from the main fuse box which works brilliantly.
Simply, an AMAZING product!
Thanks again guys!!
Mr B Sharkey Many thanks for your very professional telephone assistance today and also your no nonsense attitude to resolving the matter.It was a pleasure talking with you today.
Thank you for the good news on the possible shipping of a replacement unit to me today
Hi there, we had a 16 panel system installed a year ago here in Herts. with the wireless immerSUN system, which is nothing short of fantastic. I am getting great FIT readings and money back on my bills, as well as hot water.
We are about to sell our house and move to a coastal property facing SW in the very south of the Rep. of Ireland. I want to get a system up and running ASAP, as I will miss it straight away!
Do you have any connection with installers and partners in the Rep. of Ireland? If so, please put me in touch with them!
Frank Wurpel "This new ImmerSUN unit is a brilliant piece of technology! The electronics (4 heavy FET's etc), and the easy menu system make this one of the best (if not the best) I have come across. No confusing menu's, and a real joy to install too. The installation manual is brilliantly well designed too.
Richard Parsons Most impressed, a very good tool. The resolution and recording of household usage throughout the day and night is brilliant, the amount generated and the diversion to the heat-store (a 2000L insulated tank in my case) is also reassuring, and will let me develop a more efficient operation of the system.
Trusting the system will stay reliable. Well done to the team and developers at 4eco. I am able to sit check my generation and diversion at anytime from anywhere - super.
Worcester Renewables We have found that probably the best on the market is the ImmerSUN 2. We have installed countless units, and they have one of the best support / backup teams as well.
Do they work - yes there are lots of threads on here discussing the benefits.
Immersions only? No, any resistive load, we have connected them up to panel radiators, oil filled radiators, as well as immersions - they need to be 'dumb' though, i.e. no electronic controls.
Can they do even more? YES! (well some can )
A couple of the units, the ImmerSUN included can be set with thresholds and delays to switch on units that cannot cope with variable power being fed to them e.g Heat Pumps, they can be set when they reach an export trigger level to switch on that load, and to avoid excessive cycling they can then be configured with minimum on and minimum off times.
Gary Coombes WOW! Fantastic packaging and really impressed that screws, plugs and ties included. I expect this when I buy German goods but am prepared to be annoyed when I buy British ones, so well done for a small but remarkably important bit of customer service - I am officially impressed.
Terry Verney Absolutely brilliant piece of kit. Since we met your man at the Ecobuild show this month, we've looked forward to having it fitted. TechForEnergy and your product have done a fantastic job. Well done!
Rob Simmons This is a fantastic piece of kit. The after and pre sales support has been nothing short of 110%! Many thanks.
Ronald Chesney This product appears to be absolutely first class both in its appearance and design. the installation is quite straightforward provided you follow the excellent instructions and have a knowledge of current electrical regulations. The unit started working immediately and hopefully will continue this way. I would recommend this unit to anyone who wishes to save money.
I would also like to recommend the company that I purchased the unit from, Swithenbanks who supplied the unit at a reasonable price and delivered to my home the following day. Thanks once again and I would not hesitate to purchase another of your products...
Andy Dukes, Caistor It's great to have several reasons to recommend a device like the immerSUN. First of all, it is manufactured in the UK (hurrah!) not China; secondly, it has been conceived and designed by a Lincolnshire team committed to renewable technology; and last - but not least - it really works!
Several months in and I can't believe how effective this product is at diverting all of that excess solar electricity generation straight into your immersion heater, or other heating circuits if you have them. Forget solar thermal and all the associated costs, this magic little box will help keep your water piping hot for most of the year, saving you a fortune in energy bills and - importantly - reducing your carbon footprint. One day, all houses will be equipped with devices like these. If you have solar panels and an immersion heater, then make sure you get an immerSUN - and enjoy watching the savings add up.
Graham Tapper Certainly getting value out of my immerSUN; haven't had the boiler on for two weeks now!
Paul Haussauer My unit was installed at the same time that my 3.64kW PV system was commissioned. After installing a 210 litre Dimplex cylinder for the heat pump, hot water was provided solely by the immerSUN from May 13 last year, right up until September 13. It is currently performing the same service this year.
After 17 months the unit has transferred over 1.1 MW of power that would otherwise have been exported to the grid. A fantastic result by any standard.
Well done 4eco.
The immerSUN unit at the Crossway Passivhaus has clocked up 2,689kWh over 326 days. Looks like we might break 3mW when we meet the year mark which is fantastic! Let's do the maths; Good Energy's Economy 7 day rate (the one relevant to us) is 16.63p/kWh so that would have cost £447 (not that we'd have used daytime grid electricity to heat our heat store). It's reduced our winter wood pellet consumption by approximately 500kg which equates to about £120 saving in wood pellets i.e. 1/3 of our usual annual pellet consumption. Genius - keep up the great work guys. Hope you enjoy the stats!
Julian at the garden impressionists I'm absolutely delighted with the immerSUN, it is the ideal partner to our solar panels to help us use the spare electricity generated. We have piping hot water in the evening, saving our oil boiler the job of heating it!
Graham Tapper We've had 365kWh of free hot water from ours since it was installed about a year ago. During last summer, we only had the boiler on 5 times in three months. Saved us a packet.
'Richard Hawkes at the Crossway Passivhaus' Without the immerSUN, Good Energy's Economy 7 day rate would have cost £447, and it's reduced our winter wood pellet consumption by about £120. Genius - keep up the great work guys.
'Noel Fay' - an immerSUN Man I fitted my immerSUN recently and not only is it very easy to wire, with the excellent instructions walking me through the process having converted the immersion heater supply to a dedicated supply, it was simple to set up as well.