• Alter-Air Corporation Model: ACE 4049 East Presidio Street, #127 Mesa, AZ 85215 Phone: (602) 206-8060 Website: www.alter-air.com
• Des Champs Technologies Model: Oasis (commercial) 225 South Magnolia Avenue Buena Vista, VA 24416 Phone: (540) 291-1111 Website: www.deschamps.com
• Essick Air Products, Inc. Model: IM70 (indirect add-on module) 5800 Murray Street Little Rock, AR 72209 Toll-Free: (800) 643-8341 Website: www.essickair.com
• KR Products, Inc. Model: The Penquin 4444 Gustine Avenue St. Louis, MO 63116 Phone: (314) 353-1712 Website: www.krproductsinc.com
• Speakman CRS Model: OASys (residential) 400 Anchor Mill Road New Castle, PA 19720 Phone: (302) 351-2416 Website: www.oasysairconditioner.com
• Spec-Air Model: Acer (commercial) 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.