About The Solar iBoost+

5 out of 5 based on 7 customer ratings
(7 customer reviews)

Get free hot water from your PV array with Solar iBoost+

Marlec’s innovative Solar iBoost+ enables you to automatically consume the excess energy generated at your home so you can just sit back and enjoy the extra savings! Read on to find out how with Solar iBoost+ fitted you will…

– Cut the cost of water heating in your home.

– Reduce the use of your boiler.

– Maximise the use of the free solar energy generated at your property.

Solar iBoost+ Complete shop

Watch Your Savings Grow

If you have invested in Solar PV for your home then you will already be aware that there are periods of “export,” when you can’t consume all the energy being generated by the array.  This energy normally flows back to the grid seamlessly so you may not even be aware of it.

If your home has hot water storage with an immersion heater then Solar iBoost+ can be installed and start saving you more money on heating bills in less than 1 hour!

Solar iBoost+ 2015-1

Solar iBoost’s built in display means that you can watch your savings grow, simply press the display button to see Saved Today, Saved Yesterday, Saved 7 Days, Saved 28 Days and Total Saved readings.
You can also see this remotely within the home by choosing the iBoost Buddy, simply keep it handy and you will see when you are Heating by Solar and Tank Hot.

There are 2 key parts to Solar iBoost+

And an optional iBoost Buddy

The Solar iBoost+ itself, typically installed in the airing cupboard next to the immersion.

A “Sender” and “Clamp” located at the main electricity meter at the property.

The iBoost+ Buddy is an optional in-home display with remote control function to Solar iBoost+.

…and they all talk to each other wirelessly which means no additional unsightly wires in your home.

This is the principle of how it operates:

Our Solar iBoost+ system detects when excess energy is being exported to the grid and measures it.  The main unit receives this information from the Sender and releases the equivalent level of energy (less a small reserve) to the immersion heater.   As the exported levels adjust in line with home consumption the Solar iBoost+ adjusts the levels delivered for water heating ensuring that only excess energy is used.


It’s as simple as

  1. Using a single clamp installed at the household meter the sender transmits vital export energy information to the Solar iBoost+ wirelessly.
  1. Solar iBoost+ is activated when excess energy is available. It intelligently controls and adjusts the flow of energy to the immersion in proportion with the fluctuating export levels.
  1. Water is heated over the course of the day using the free solar energy at your home.

and you cut down on your usual forms of energy needed to heat water!

Is my home suitable for a Solar iBoost+?

  • I have on-site power generation. (Solar PV and wind are most common).
  • The distance between the water tank and utility meter is less than 30m.
  • Energy usage in the household is less than the energy generated and excess is exported to the grid.
  • I would like to reduce my energy bills, especially for expensive water heating.

You may be out for periods during the daytime and generate more than is needed to cover the standby of all your appliances OR even at home during the day but rarely consuming energy up to the peak output of the solar array or wind turbine.

Whenever you are exporting more than 100W you could be “dumping” that excess energy into your hot water tank and saving even more money. Even if you have an export meter the cost savings possible on water heating may be greater than the export rate paid by the electricity companies.
Talk to your local PV installer or qualified electrician today.

How does it affect my Feed in Tariff Payments?

It doesn’t! In the UK FIT generation payments are not affected. As most export tariff contracts are based on deemed energy usage rather than actually metered self consumption is most beneficial. Solar iBoost+ enables you to usefully and automatically consume any excess energy generated rather than export it. Even with an export meter the benefits of Solar iBoost+ can still easily outweigh rising energy costs.

7 reviews for Solar iBoost+

  1. 5 out of 5


    Very pleased with my Iboost. I have 8KW of solar PV and two solar thermal panels. We have a 300 litre hot water tank. The solar Iboost has achieved a great deal more than we thought it would and after 12 months it has saved 2300 kWh.

  2. 5 out of 5


    After upgrading to this unit and now having the iboost heating the top of my tank before switching to the bottom element this has had an extremely positive outcome. We have been amazed at the difference it has made

  3. 5 out of 5


    Bought & fitted your iBoost 1 month ago. What a simple clever little unit, saving me money every day. Would recommend you to everybody.

  4. 5 out of 5


    I have installed the iBoost plus and since it was installed it has heated all our hot water for 4 adults. It originally was very noisy but after contacting Marlec very helpful phone line they sent out a rubber foot to fit to the unit. This holds the fan unit in place and reduces the original noise quite dramatically. They assured me that all units sold now come with this rubber foot. Highly recommended and a very simple 5 mins to fit. Many thanks from a happy customer 😊

  5. 5 out of 5


    Phoned with a problem of a noisy fan in the Iboost and received details via an e-mail explaining how to check the fan. Once the cover was removed the small rubber stop had not been fitted leaving the fan able to move. Phoned Sarah at Marlec who is to post one next day. Brilliant service and thank you.

  6. 5 out of 5


    Love my Solar iBoost+ that I had fitted with my panels in January this year. It has given me loads of hot water and I have switched my gas water heating off since May! I was recommended it by my father in-law who also has one fitted. Well done!

  7. 5 out of 5


    Great product and easy to use. I got the Buddy too which is really handy.

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