Hot Water through the Power of the Sun
Fothermo is your expert in photovoltaic boilers that help you generate hot water cost-effectively, independently, and sustainably.
Thanks to simple Plug&Play solutions, no electrician installation is necessary, as all products operate on low-voltage protection. Since the products do not feed electricity into the grid, registration is usually not required.
Get started now and save hundreds of kilograms of CO2 – for a sustainable and eco-friendly hot water supply!
Hybrid-Water-Heaters
Replace traditional electric water boilers with the innovative 30L and 80L hybrid water heaters and generate hot water primarily through your PV modules. If the sun isn't sufficient, they automatically switch to 1.500W via 230V grid power – an efficient solution for modern energy needs.
Caravan-Water-Boiler
Fothermo is reinventing hot water supply in motorhomes. Intelligent and energy-efficient, the Caravan-Water-Boiler use the energy from your PV modules or a battery to significantly increase comfort during your next trip. Treat yourself to the best on the road!
Switching Device
The Switching Gear feeds excess energy from the photovoltaic boiler directly into your home's power grid – simple, efficient, and environmentally friendly. With an output of up to 1600 Wp and an intelligent control system, it is the ideal solution for sustainable energy management at home.
Photovoltaic Heating Element
The Photovoltaic Heating Rod makes it easy to retrofit your hot water boiler with solar technology. Simply screw it in and benefit from maximum efficiency with up to 2000 Wp. With an innovative MPP tracker and simple installation, it is the green choice for an environmentally friendly hot water supply.
All-in-One Sets
In addition to all Fothermo boiler variants, we also offer compatible complete sets with matching solar modules in our range. Upon request, we can also create customized all-in-one-systems tailored exactly to your individual needs.
Inquire now!
Product is expected to be back in stock on 3 November 2025
Product is expected to be back in stock on 3 November 2025
Shipped in 1-3 days
Shipped in 1-3 days
Product is expected to be back in stock on 3 November 2025
Product is expected to be back in stock on 3 November 2025
Shipped in 2-5 days
Shipped in 2-5 days
Soon available again
Soon available again
Product is expected to be back in stock on 3 November 2025
Product is expected to be back in stock on 3 November 2025
Soon available again
Soon available again
Shipped in 1-3 days
Shipped in 1-3 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 3-6 Werktage
Shipped in 3-6 Werktage
Soon available again
Soon available again
Shipped in 10-14 Werktage
Shipped in 10-14 Werktage
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 2-5 days
Shipped in 1-3 days
Shipped in 1-3 days
Product is expected to be back in stock on 19 November 2025
Product is expected to be back in stock on 19 November 2025
Product is expected to be back in stock on 19 November 2025
Product is expected to be back in stock on 19 November 2025
Product is expected to be back in stock on 19 November 2025
Product is expected to be back in stock on 19 November 2025
Shipped in 3-6 Werktage
Shipped in 3-6 Werktage
Shipped in 1-3 days
Shipped in 1-3 days
Fothermo - Products & Technology for Photovoltaics
Fothermo is a leading supplier of highly efficient, reliable, and cost-effective boilers and photovoltaic boiler systems. Whether you want to replace an old boiler or install a new one, you are guaranteed to find the perfect solution for your needs with the wide range of Fothermo products in our online shop.
Fothermo Boiler: The first photovoltaic water boiler
Fothermo has developed the first photovoltaic water boiler for gardens, motorhomes, caravans, and mountain huts. A photovoltaic boiler is the perfect solution for an economical and self-sufficient hot water supply. Once installed, it provides hot water free of charge for years.
Fothermo System: Photovoltaic water boiler with solar system
Installing the photovoltaic modules is particularly easy thanks to plug & play connections: the modules are connected directly to the boiler via standard plug contacts. If the solar energy is not sufficient to heat the water over a longer period of time, the optional 230-volt reheater can automatically reheat the boiler.
In our online shop, you will find the entire Fothermo system, consisting of boilers and solar modules, in various designs, as well as the necessary accessories.
Buy quality products from Fothermo online
Fothermo is the perfect choice for anyone looking for an efficient and reliable heating solution. The products are easy to install, energy-efficient, and provide even heat in your home, mountain hut, or caravan. And when you shop in our online store, you can be sure that you are getting high-quality Fothermo products at a fair price. What are you waiting for?
If you have any questions, our team of experts is always available to offer advice and assistance. Feel free to call us at 08721 91994-00 or send an email to info@offgridtec.com if you need help making a purchase decision or would like a personal consultation.
FAQ
- Can photovoltaics be used to heat water? The Fothermo photovoltaic boiler can supply you with hot water using energy from the sun. If the solar energy is not sufficient for a longer heating period, the boiler can be automatically reheated with the 230V reheating device.
- How is a boiler operated? The Fothermo boiler is the first photovoltaic boiler and is therefore powered by sunlight. If solar energy is not sufficient, an optional 230-volt reheater can be used.
- Are Fothermo boilers suitable for camping? Fothermo boilers are ideal for camping trips or even tiny houses.
- Is Fothermo a high-quality brand? Fothermo is committed to technical excellence and guarantees high-quality products. The systems developed by Fothermo are unique.