Simple and inexpensive photovoltaic water heating that is easy to install and commission.

Discover photovoltaic boilers

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Photovoltaic heater

The photovoltaic heating element enables existing buffer storage tanks to be easily retrofitted with photovoltaics. To put the heating element into operation, the photovoltaic modules are simply plugged into the housing.

Photovoltaic 200L and 300L boiler

The 200L and 300L photovoltaic floorstanding boilers provide affordable and C02-free hot water for the whole family. The photovoltaic modules are connected directly to the boiler. An integrated heat exchanger enables connection to an existing gas, oil or pellet heating system in order to be able to sufficiently reheat the water even on cloudy days.

Photovoltaic hybrid boiler

The photovoltaic hybrid boiler is the better electric boiler. It replaces every "normal" electric boiler.
The heat is primarily generated by photovoltaic modules. If the sun doesn't shine, the hybrid boiler can automatically reheat with 1,500W via 230V mains power. The boiler is available in sizes 30L and 80L.

Photovoltaic off-grid boiler

The photovoltaic off-grid boiler offers the ideal solution for a cost-effective and sustainable hot water supply in stand-alone systems such as summer houses, mountain huts or as drinking water pre-heating in front of a heating system or a continuous-flow water heater.

switching device

When the photovoltaic boiler is fully heated, the excess electricity is fed into the home network. The power is fed in via a micro PV inverter. The currents are switched intelligently and fully automatically. With the switching device, you can use even more of the energy you generate.

Photovoltaic boiler briefly explained

save costs

Generate your own solar power and save on expensive grid power immediately. Just install the PV module and connect it to the photovoltaic boiler. From now on you can produce your own free hot water.

enjoy independence

Thanks to the inexpensive photovoltaic modules, hot water can be generated anywhere in the world. Even in the most remote places on this planet. The photovoltaic boiler does not require a connection to the power grid to operate. This is how you can easily make yourself independent.

living sustainability

Energy from the power of the sun. 100% renewable and sustainable. With the photovoltaic boiler, you can not only generate hot water, but also become an active climate protector and save hundreds of kilograms of CO2.

What our customers say

We have had this island system installed in our weekend house since mid-April 2022 and are overjoyed to finally have constant warm water for showering and hot water for washing dishes.

In this way, solar energy from the balcony can also be used in the house without any bureaucracy and create some independence from gas.

The installation of the water heater was worth it! Even if the conditions in Ireland are not always so good, the device always supplies enough hot water in a relatively short time.

As a new customer, I would simply like to thank you for the direct service so far and the prompt delivery of the entire product, including the photovoltaic modules.

Questions are always answered quickly and financial questions are also clarified in an uncomplicated manner.

That says a lot for your company

Hello fothermo team, this is a great product! First week of October and water is heated to maximum 65 deg. There is no need for AC power for now. This product will dominate the market, classic systems can not compete with this