Reduce your Energy Bills

Our energy saving device for solar directs excess electricity to the immersion heater.

Use up to 100% of your generated electricity and still get 50% export FiT.

Increase your return on investment

When using the immersun to heat water with PV we estimate you could achieve a payback of 3-5 years.

By using more of your free electricity you will make substantial savings

A solar controller that is simple to install

The immersun uses your existing immersion heater when using your solar panels to heat water.

You have total control over your hot water with our advanced features

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'On the first day of installation, the immerSUN captured over ten Kilowatts of solar energy, which was dumped to the central heating. While the unit was turned on, we used nomains gas and the house was warm for the whole day. The installation works well and we were very happy with the service.' -