• Freus, Inc. Model: Freus (residential) PO Box 465 Sunland Park, NM 88063 Phone: (505) 589-5431 Website: www.freus.com/products
• Premier Industries, Inc. 11050 N 22nd Ave. Phoenix, AZ 85029 Toll-Free: (800) 254-8989 Website: www.piec.com
• Spec-Air Model: Pre-Cooler 6850 McNutt Road Anthony, NM 88021 Phone: (505) 589-6200 Website: www.specair.net

Note that listing here does not imply endorsement by the Western Cooling Efficiency Center nor the University of California.