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Gerd-RennerTwinsolar: price+value = eligible!

Due to our new prices, the collectors are now cheaper than a good flatscreen and they are subsidized in various countries - for example in Germany with 90€/m². So all you need is a good place where the collector can capture the radiation of the sun and the solar ventilation can begin.

Only once a year you have to change the filter, otherwise the collector is maintenance free. The system operates self-sufficiently.


Gerd Renner
Project Manager

German Quality...subsidised by the state

Our SolarAir collectors are being developt already for 30 years in our own factory in Amberg under the highest demands on quality. They are very robust and can be used during decades.


SolarAir collectors by Grammer Solar are subsidised in Germany.


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