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  • Robin Mundy

    How to Build a Heat Box for $6, Heat your Home Free. Click on the "about" button for more building directions.

  • Lucy Lenkewicz

    The EPA, and Mother Earth, have expressed interest in "Passive Solar Heat Box" units for home and commercial building heating. We decided to build one, 4.5' ...

  • Linda Lawton

    Build a heat box to heat your house. AMAZING!

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