DIY Miniature Soda Can Solar Heater

from PrimedPreppers:

Using a few soda cans, some spare wood, some leftover plexiglass and a couple of old CPU fans – I made a miniature solar heater that is designed to sit in a window sill. This is a smaller version that I wanted to test out before building a larger 4×8 unit to do some real heating. The goal is to use the sun’s heat to warm up the aluminum cans and push the air out of the box to produce warmer results inside the room using the CPU fans. Now, these fans will not be pushing a ton of air obviously, but being that this unit can run on a solar panel, it’s all free.

First you just need to find enough spare wood to build your box. Do all of your measuring to make sure the box will accommodate the number of soda cans you plan on using – obviously, the more the better, but in this case I’m not building a large unit. Next, paint the inside flat black to absorb the most heat. Cut two holes, one for intake and the other for outtake. You’ll want to install your fans now and tidy up the wiring before you do anything else.

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