Airconergy helps homeowners and small-business owners save 12-20% on home-energy costs with HSC Controller. This energy-saving device is designed to be easily retrofitted to residential and commercial HVAC systems, saving 12–20% on space heating and cooling. The device has been tested on leading manufacturers’ equipment, with energy savings verified by the California Energy Commission. Get the free reports at the company's web site.

When installed in an HVAC system, the HSC Controller extends the fan’s running time by up to 8 minutes. Some manufacturers of HVAC systems program the fan to stay on for 90 seconds, but recent studies have shown improved energy efficiency when the fan runs longer. By keeping just the HVAC fan on for a longer period of time after the heating or cooling cycle, the system makes use of heating or cooling that would have been wasted.