Solar Heat Kit-4' x 8' Solar Heat Panel

To estimate the size of a FreeHeat Solar Collector array that would work for you, divide the number of square feet you want to heat by 10.  For example, a well-insulated 1200 square foot house would need 120 square feet of collector surface.  

The thermosiphon collector consists of clear, corrugated polycarbonate panels fastened to 2-by-6-inch studs. The clear panels admit sunlight, and an absorber suspended inside the collector captures the suns heat energy. The air around the absorber warms, expands and rises, creating a convection current. Vents at the top and bottom of the collector allow air to circulate through it. Cool air enters the lower vents from the interior, is heated by the absorber, rises to the upper vents and returns to the interior. Air circulation continues as long as the sun shines on the collector.

At night, airflow reverses as air in the collector cools to outside temperatures. Simple flapper valves on the top vents stop this reverse circulation and keep the heat inside.

HOW IT WORKS

    Simple no electrical or plumbing hookups needed, no maintenance required
            Affordable costs less than 300 gallons of heating oil at today's prices
            Very fast payback unlike complex high-tech systems, pays for itself in as little as one heating season
            Effective delivers output temperatures up to 140o F

Each kit, together with the lumber and glazing purchased at your local hardware store and labor you provide, gives you everything you need to assemble and install a 4'x8' solar heater.

We provide:
       Instructions and parts list
       Aluminum mesh collector plate, vent templates, airflow flapper valves, fasteners, and hardware cloth
       Telephone and e-mail support.

Low-tech solar space heaters use sunlight as fuel during clear winter days.
FreeHeat solar space heaters pay for themselves quickly. Compared with using gas, electricity, or oil heaters, they will produce substantial savings year after year when properly installed on a southerly facing wall that gets unobstructed sunlight. 

These heaters are intended only for use as supplemental space heaters. While the sun shines, they produce lots of heat and will warm insulated spaces.  To place an order, obtain support, or get more

We provide you with everything, except the frame and the polycarbonate sheet
SOLD ONLY TO RETAIL STORES! !