* Provides free additional heating
* Completely solar powered
* No mains or water connections
* One-off cost of buying and installing
* No running costs or maintenance needed
* Apt for DIY-installations
* Wall or roof mounted
* Only a discrete vent inside the house
* 6 different sizes depending on your needs
* Airflow up to 160 m3/hour
* Air flow control / on-off switch |