Background

ComStar International Inc. offers dependable Glycol for Geothermal System applications that provide excellent freeze protection and corrosion control. Developed for geothermal heating and cooling systems, this high-quality glycol supports efficient heat transfer while protecting system components from harsh operating conditions. HVAC contractors trust ComStar's environmentally responsible formulations for reliable year-round performance. With more than 50 years of manufacturing experience, ComStar continues to deliver innovative maintenance products that enhance geothermal system efficiency and long-term reliability.