Smartcool Systems recently launched the ECO3, a new wall-mounted unit that helps businesses and homeowners reduce energy use, save money, and benefit the environment. The ECO3 provides extensive cost savings and environmental benefits by optimizing the energy efficiency of air conditioning and refrigeration systems with one or two compressors. These cooling units are found in millions of buildings operated by retailers, restaurants, grocery and convenience stores, hotels, and other small commercial businesses and residences. ECO3 is easily installed and provides a quick return on investment. It works with existing air conditioning, refrigeration equipment, and controls to reduce energy consumption by about 15%, and can also optimize the heating cycle of compressor-driven heat pumps.