Solar air heater

New idea! estimated cost $75.00

I have 2 insulated glass vinyl windows that are 8 ft wide and 4 ft high.  I think I’ll build a solar air heater. 8′x8′ I’ll need 6- 2x6x8′, 2-sheets of 3/8″ plywood, 2 sheets of 1″ foil face insulation, 1- 100 ft roll of 3″ corrugated drain tile, some black paint and some shingle nails. on the south side of the house it should be able to heat air to 100ºF+. Here are the windows and wall I plan to put the heater on.

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