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Order your Twinsolar-System


A solar ventilation with an energy gain by Grammer Solar is simple and efficient in planning, installation and operation. Place your order for a system directly at our online shop and let it be installed by a local handyman. Experienced handymen can easily install a Twinsolar Compact on their own.

In case you should need professional support regarding construction or installation, you can gladly contact one of our partner companies in your area.
We would readily check up on your planning if you send us pictures and sketches of your house. For this reason, please order the item “Project consultation” in our online shop.

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Shipping costs

Shipping costs
For delivery addresses with difficult access (for example, mountain huts, places on islands ...) the possibility of delivery must be checked first. If interested, we consider a delivery for you and send you a quotation for the freight costs

Our shipping costs for collector systems
Throughout Germany - 100 euros incl. VAT (only mainland, islands on request)
Throughout Europe- 450 euros incl. VAT (only mainland, islands on request)

Our shipping costs for delivery of accessories
Throughout Germany – 9.52 euros incl. VAT (mainland)
Throughout Europe - 25 euros incl. VAT (mainland)
Third countries and islands – 40.46 euros incl. VAT


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