The Airstack™ ASP are modular air-cooled chillers. The units are available in 10-, 15-, 20-, 30-, and 60-ton packages. Each of the air-cooled chillers has dual scroll tandem compressors. Available with high static condenser fans for ducted applications, the chillers can be combined to create up to 600-ton units. Additionally, the MagLev™ (magnetic levitation) compressor model is available. It starts at the 75-ton size, and offers the ultimate in controls and efficiency, states the company.

Multistack, 1065 Maple Ave., Sparta, WI 54656; 608-366-2400;

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