The solarsheat does workwell in Wisconsin. But heated air output temperture does drop as outside temperture drops.
With full sun and temperture in the single digits the panel was outputing 90 F heat air. But when the winds picked up and temperture dropped below zero. The solarsheet would not turn on. Wind chill was -33 F. I did mount the solarsheat on a south facing wall that is at a 30 degree angel from true south. The panel only produces heat in direct sunlight. You do hear the blower when it's running.

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