Gary T. Calloway is a licensed HVAC contractor and mechanical systems consultant with over 18 years of field experience in residential and commercial climate control. Operating out of Phoenix, Arizona, he has overseen the installation, maintenance, and repair of HVAC systems across thousands of properties throughout the Southwest. Gary holds EPA 608 certification and is a North American Technician Excellence (NATE) certified technician. He has trained apprentices and junior technicians throughout his career and regularly contributes practical guidance on energy efficiency and system longevity. Gary is a member of the Air Conditioning Contractors of America (ACCA) and stays current with evolving refrigerant regulations and smart thermostat technologies.