1. Technological approach
The technological difference between fothermo and conventional AC-based systems is fundamental.
fothermo relies on DC-based systems in which solar boilers are connected directly to solar modules. This enables simple, self-sufficient use of solar energy without the need for a large PV system or complex AC integration. fothermo works independently of the grid and uses the energy from the solar modules directly to heat water. An additional advantage of fothermo products is the ability to feed excess electricity into the home grid via an 800-watt micro inverter , similar to a balcony power station. This offers a flexible plug-and-play solution that works without extensive installation.
In comparison, conventional AC-based systems rely on large, grid-tied photovoltaic systems . These solutions channel excess solar power through the home's grid to hot water tanks or other consumers. Such systems rely on converting solar energy into alternating current (AC) before the power can be used, which requires additional components such as inverters and control systems.
2. Complexity and installation
The installation complexity is a key difference between fothermo and classic AC systems.
fothermo offers a simple plug-and-play solution that works without extensive planning and integration. fothermo's solar boilers can be easily connected to solar modules, which reduces the overall installation effort to a minimum. No integration into existing power grids or complex cabling is necessary. Thanks to the 800-watt micro inverter, the excess solar power can simply be fed into the socket, similar to balcony power plants. This makes installation particularly easy and flexible, even for smaller households, holiday homes or remote locations.
In contrast, AC-based systems require extensive installation and integration . These systems must be integrated into the existing power grid and often require additional hardware such as inverters and energy management systems. The installation of these systems usually requires specialist knowledge and is associated with higher costs and greater planning effort. Especially with large photovoltaic systems, careful coordination of the various components is necessary in order to be able to use the excess solar power efficiently for hot water production.
3. Cost structure and efficiency
fothermo offers a particularly cost-effective solution compared to conventional AC-based systems.
The fothermo products are significantly cheaper to purchase due to their simple technology and the lack of additional inverters and complex control systems. Since no large PV systems are required, households can heat water with minimal investment . In addition, the direct use of solar energy in DC form enables higher efficiency , as there are no conversion losses due to inverters. The ability to feed excess electricity directly into the home grid via a micro inverter can further increase the self-consumption rate, leading to long-term savings in electricity costs.
AC-based systems typically require a higher initial investment as they rely on integration with large PV systems. Converting DC solar power to AC also causes conversion losses that reduce the efficiency of the system. These solutions are particularly suitable for households with large photovoltaic systems where the surplus power can be used for hot water. However, the initial costs are higher as installing a comprehensive PV system and integrating inverters and control units incur additional costs.
4. Flexibility and areas of application
The fothermo products are particularly suitable for users who are looking for a flexible and self-sufficient solution.
fothermo offers a solution that can be easily adapted to different environments. Whether for small households , holiday homes , tiny houses or remote locations - fothermo enables solar water heating without complex integration into a power grid. The flexibility of the DC-based solar boilers and the easy feed-in via the micro inverter make the system ideal for users who are looking for a simple, fast and cost-effective solution to use solar energy directly.
AC-based systems are particularly suitable for larger households or energy-efficient new buildings that already have a comprehensive photovoltaic system. These solutions offer optimal use of surplus electricity and make it possible to generate larger amounts of hot water or serve other consumers in the household. However, flexibility is limited because these systems rely on integration into an existing PV system and the power grid.
5. Energy management and intelligence
The systems differ significantly in terms of energy management .
fothermo relies on a simple, self-sufficient solution that works without complicated control systems. The solar boilers work independently and do not require extensive technology to use the energy from the solar modules. This makes the solution particularly attractive for users who do not want complex control or monitoring. Thanks to the micro-inverter technology, excess electricity can simply be fed into the home grid, which further increases efficiency.
AC-based systems, on the other hand, are often equipped with intelligent energy management systems . These systems direct solar power to different consumers, such as water heaters or batteries, and offer detailed control via smart home systems. This enables precise use of solar power, which is particularly efficient in large PV systems. However, this requires extensive integration and often expensive additional components.
Conclusion
The choice between fothermo and conventional AC-based hot water solutions depends largely on individual requirements:
The choice between fothermo and conventional AC-based hot water solutions depends largely on individual requirements:
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fothermo offers a cost-effective, simple and flexible solution for hot water preparation, which is ideal for small households, holiday homes and self-sufficient systems. The advantage is the uncomplicated installation, the direct use of solar energy and the feeding in of excess electricity via the micro inverter. This makes fothermo an attractive option for anyone who wants to benefit from solar energy quickly and easily.
- AC-based solutions are the right choice for larger households or complex photovoltaic systems that rely on comprehensive integration and energy management systems.
If you are looking for an independent and immediately usable solution, fothermo is the right choice. However, for large PV systems and more sophisticated energy management systems, AC-based systems offer more comprehensive options.
