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Solar energy is one of the most environmentally responsible energy conversions imaginable. Furthermore, the government is participating in investment in such systems. For the latest information on subsidy programs, contact your local heating contractor or refer to the product information section of this website.

 

Using the sun to save energy

Thanks to readily available solar energy, it’s now possible to save up to 35 percent on heating costs in detached or semi-detached homes with a solar thermal system by using solar collectors for both central heating backup and hot water heating. The system can cover up to 60 percent of the annual hot water heating energy requirement.

 

Example: Modern detached house

Heat is generated by a gas condensing boiler and distributed throughout the interior spaces either via radiators or underfloor heating. A solar thermal system with an absorber area of ​​approximately 5 m² is also used to heat the hot water. The living area is approximately 140 m².

Solar collectors
Underfloor heating
Solar-Divicon pumping station
Underfloor heating

What are the benefits of combining gas heating with solar heating?

Nothing is as efficient as condensing technology in energy conversion, achieving energy utilisation rates of up to 98%

All condensing boilers and heat exchangers are constructed of high-alloy stainless steel. This ensures high operational reliability and a long service life.

Viessmann condensing boilers are already prepared for biogas use.

Solar thermal energy

Solar energy is provided free of charge.

Energy is converted without generating harmful CO₂ emissions.

All solar collectors are equipped with the ThermProtect automatic temperature-dependent shutdown system, which ensures high operational reliability thanks to protection against overheating.

Solar thermal systems provide greater independence from fossil fuels.

A solar thermal system is an ideal addition to any heating system: it can be used for both hot water heating and backup central heating in spring and autumn.

Premium heating convenience: Gas condensing technology from Viessmann

Vitodens 343-F gas condensing boiler

Rely on cutting-edge technology: Advanced and highly efficient Viessmann gas condensing boilers make it easy to warm up and relax.

Viessmann offers both floor-standing and wall-mounted gas condensing boilers, with fuel-to-energy efficiency reaching up to 98%. Wall-mounted gas condensing boilers are ideal for installation near living spaces due to their compact size and quiet operation.

The Inox-Radial stainless steel heat exchanger, combined with the MatriX gas burner, ensures high energy efficiency and long-lasting heating convenience. This technology also reduces heating bills and minimizes emissions. Thanks to the Lambda Pro Control automatic combustion controller, Viessmann gas condensing boilers are already designed to meet future standards, as they can operate with various gas types and biogas blends. This makes them a future-proof and cost-effective solution.

Other Viessmann guides and tips

Wall-mounted and floor-standing gas condensing boilers

Wall-mounted and floor-standing gas condensing boilers

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Gas as a heating fuel

Gas as a heating fuel

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Gas condensate technology: how it works!

Gas condensate technology: how it works!

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