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Whether in a garden shed, RV, trailer, or tiny house: With a Fothermo water heater, you’ll have a reliable and convenient supply of hot water. These photovoltaic water heaters use solar power to heat water, making them a modern alternative to traditional electric water heaters in mobile, small-scale, or off-grid applications.

Fothermo develops unique photovoltaic water heater systems specifically designed for the simple and direct use of solar energy. At Offgridtec, you’ll find Fothermo water heaters in various sizes to suit different needs and water consumption levels.

Fothermo: The Photovoltaic Water Heater

A Fothermo water heater uses energy from photovoltaic modules to heat water in the integrated storage tank. The solar power generated is converted directly into heat. This allows you to harness solar energy during the day and provide hot water for showers, sinks, the kitchen, or outdoor use.

Photovoltaic Water Heaters for RVs, Tiny Houses, and Garden Sheds

Fothermo water boilers are particularly popular for mobile and compact living spaces. In RVs or trailers, they provide greater comfort on the go. In tiny houses, garden sheds, or vacation homes, they enable a hot water supply without complex building systems. These boilers are also a suitable solution for mountain cabins, workshops, or off-grid PV systems.

Boiler Sizes to Match Hot Water Needs

Depending on the application and number of people, choosing the right water heater size is crucial. Small water heaters are well-suited for mobile applications, hand-washing sinks, or short showers. Larger water heaters offer greater comfort when hot water is needed regularly. Key factors include your daily hot water needs, available PV output, and the intended use.

Flexibly combine PV operation, batteries, and auxiliary heating

Depending on the model and accessories, many Fothermo water heaters can be flexibly integrated into your energy system. In addition to direct operation with solar power, a battery or supplemental heating may also be useful in certain applications. This allows you to better adapt your hot water supply to weather conditions, usage patterns, and available energy sources.

Buy Fothermo water boilers online at Offgridtec

If you’d like to buy a Fothermo water boiler, you’ll find a selection of models for various applications at Offgridtec. When making your selection, consider storage capacity, connection options, available PV power, and the planned installation location. This will help you find the right photovoltaic boiler for your self-sufficient hot water solution.

If you have any questions about our Fothermo water heater systems or would like some advice, simply call us at 08721 91994-00 or send an email to info@offgridtec.com. We’d be happy to help you make the right choice.

FAQ

  1. What is a Fothermo water boiler?
    A Fothermo water boiler is a photovoltaic boiler that uses solar power to heat water directly in the storage tank.
  2. Is a photovoltaic water heater suitable for camping?
    Yes, Fothermo water boilers are ideal for camping, RVs, and trailers, as they can provide hot water using solar power.
  3. What is the right water heater size?
    The right size depends on your hot water needs, the number of people, the intended use, and the available PV capacity. Smaller water heaters are often sufficient for mobile applications, while stationary solutions may require a larger capacity.
  4. Can a Fothermo water heater be powered by a battery?
    Depending on the model and accessories, a Fothermo water heater can also be used in conjunction with a compatible battery. This requires the appropriate connection accessories.
  5. How does a water heater differ from a solar system with a water heater?
    In this category, you’ll find individual Fothermo water boilers. The “Solar Systems with Boilers” category, on the other hand, contains coordinated sets that include both a boiler and solar modules.