What is the difference between the SolarSheat 1500G and 1500GS?
Both Solarsheat air collectors use inside air and heats it up to higher temperatures, and dumps it back into the house. The 1500G uses a self-powered fan, which is built into it with a solar electric panel. It’s designed to be installed very quickly. It can be installed in 1 hour on a south facing wall. The 1500GS is considered a “secondary” solar collector, with no moving parts. It was designed to add power to a 1500G (see 1500G 2 Pak) or to be connected to other 1500GS’s.
