Trane Tempstar MasterCool Cactus Mechanical, Inc. 2038 W. Ironwood Drive Phoenix, AZ 85021-1919 Office:  602 866-1200 Fax:  602 216-9676 Commercial License:  ROC-79638 Residential License:  ROC-78838     Products Mastercool MasterCool Evaporative Coolers MC / HC Series Contractor Series Window Cooler   MasterCool is our top-of-the-line, most superior line of evaporative coolers. All of our energy efficient MasterCool coolers include our premium MasterCool media for maximum cooling. Whether you need you entire home cooled or just want to cool down your patio, MasterCool has an exceptional product to suit all of your cooling needs