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An ingenious hack by a DIY owner reduced his electricity bill to just $ 1.50 a year
The hack uses 272 aluminum cans to create a heating panel that is installed on the side of the House.
Terry Johnson and his partner Mel McMinn with the help of their friends, collected the boxes and built the project for a few weekends at their home on the North Island of New Zealand on the process documented on his blog
. "We needed something to make it thermally efficient, but we did not have a big budget."
The project cost him about $ 500 in total, but his heating bills are just $ 1.50 a year.
He cut the top of the boxes to form baffles and glued them in columns of 16.
painted black to absorb as much heat as possible, then mounted on a plywood
One side made of transparent polycarbonate was fixed to the plywood frame, which allowed the light to shine on the boxes.
Two holes were cut at the top and bottom to allow the circulation of air.
An intake fan and an exhaust fan were installed on the interior wall to achieve a result that he claimed to heat his home a few degrees, which was enough to reduce almost completely his electricity bills.
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