This unit puts out about 1000 - 2000 btu of heat depending on exposure to the sun. I've had really good success with some earlier prototypes and have come up with
this design for my finished product. This unit can be used for inside use in front of a window or sliding glass door or outside
mounted on a wall such as a workshop or garage. It can be used for use in an RV, camper or any other area in need of heating. You can
use a solar panel to power the fan or use a small power adapter from your local hardware or electronics store. It comes with instructions on
operation and mounting if needed. For indoor use you can simply sit it in front of a window or glass door facing the sun. Internal temperature can reach
over 162 degrees F. With the fan running average temperature is about 94 F. For comments and questions you can email me at thomas@backyard-power.com.
Solar unit mounted on my woodshop. I mounted it on the south wall with lots of open area
facing the sun. Vent blows air right over my workspace.
Without the blower running the internal temperature reached a maximun of 155 degrees. Outdoor temperature was 30 degrees. The solar unit raised the temp by 125 degrees. 2:55pm
With the blower running it maintained a temperature of about 94 degrees while the sun was out. Raised the temp by 64 degrees. 3:17pm
On one of my older units I once reached a temp of 162 degrees F. Outside temp was 25 degrees.
Pictured here shows the temp at 4:06pm is 82.4 degrees F with the fan still running. The sun is getting low in the sky.
The rear of the unit has an intake vent at the bottom to pull in cold air and blows it out the vent near the top.
I bought a 5 watt solar panel from Harbor Freight for $40 to run the fan (not included with unit). While the sun is out
the fan is running. Ideally you want a thermostat to switch on the fan at about 90 degrees.
