Are you interested in using a passive heating solution for your home? One of the best ways to do this is to make a window mounted solar hot air furnace. This is a great way to add a heating solution to homes that are off the grid.
The way that a window mounted solar hot air furnace works is by heating air that is circulating out of a room or other area of a home like a garage. Tin cans, metal pipes, and any other suitable materials used for the heating unit are painted black to help absorb heat.
You will make the box for your window mounted solar hot air furnace out of wood that should to be painted or stained. The total cost will be around $60 unless you have scrap material to use for the project. This is a great option for you to reduce some of your heating costs during the winter.
Instructions to make your own window mounted solar hot air furnace are on instructables.com here…