Ellison Heating & Air Conditioning

International Mechanical Services, Inc ( IMS ) is a Texas based mechanical contracting company specializing in HVAC and Plumbing. IMS offers a complete range of mechanical services and we aim to get your job done on-time and within your budget. IMS is dedicated to keeping ahead of our industries' advancements in service and technology. It is our vision to continue to lead in our industry of choice and always be reliable, responsive and ready to meet your mechanical needs.

Established in 1932 as Ebert Air Conditioning, Tezel & Cotter Air Conditioning specializes in the designing, installation and maintenance of air conditioning, heating, ventilation and filtration systems. It offers its services for schools, churches, commercial and industrial buildings, malls and governmental projects. Tezel & Cotter Air Conditioning maintains a sheet metal shop and provides a range of commercial and industrial equipment, including chillers, boilers, pumps and air handlers. The company additionally serves financial institutions, medical facilities and computer rooms. It provides plumbing and pipe fitting, as well as repair and maintenance services. Tezel & Cotter Air Conditioning is located in San Antonio.