SIMPLE HOMEMADE SOLAR HEATER -TEST IN FINLAND -8 C!!!

FREE HEAT FOR YOUR HOUSE / SUMMER COTTAGE!!!
This simple construction, make it possible.
We made a test by -8 C and the Sunheater was pumping +28 C into the house!! Almost 40 C difference to the outside temperature, and this in January in Finland, where the sun have now almost no effect.
Last year in march we hade even 60 C difference.
Enjoy the video

[@mjuhanil]

Nice

[@yurakovalec7292]

I think you can see how to make it on Avasva . This is just an advice ;)