Stone Mountain Technologies, Inc. (SMTI) is a developer and manufacturer of high-temperature gas absorption heat pumps under the ANESI brand. This best-in-class heating solution uses the existing natural gas or propane fuel supply to homes and small commercial buildings. Anesi gas heat pumps include patented compressor-less technology and operate without harmful refrigerants. The Anesi gas heat pump has an Annual Fuel Utilization Efficiency (AFUE) rating of 140% which immediately reduces fuel use and and carbon emissions. SMTI's Anesi products are ideal for a wide range of residential and light commercial heating needs, including forced air and hydronic space heating as well as water heating.