A place to learn about Multistack Modular Chiller Products. Multistack, Originators...Innovators...Never the Imitators!

The modular water chiller was invented by Multistack. It started with a radically simple idea: water chillers made up of modules that could be brought into the equipment room one at a time, through standard doorways and down elevators, to form a fully integrated water chiller system. The modular chiller idea launched a revolution and transformed Multistack into a leader in the commercial water-chiller industry.

Multistack perfected the modular chiller and leads the industry in innovative and environmentally friendly modular solutions. Since founding in the late 1980’s, Multistack has engineered, manufactured, and distributed an impressive array of modular air conditioning firsts: the first on-board strainer, the first modular automatic blow-down device, the first modular chiller for variable flow, the first modular chiller-heater (heat pump), the first modular heat-recovery chiller, the first modular air-to-water heat pump, the first modular chiller to utilize MagLev™ compressor technology, and the first modular chiller to utilize R-410A.

Never the Imitators…
Multistack sets the standard in the industry for superior customer service, fast and on time shipment, superior product quality, and new product development. Our pioneering leadership in environmental issues is well documented. If you want the best, be sure to specify the original: Multistack.

What is a MagLev Compressor?

In a world that confuses real technology with trendy gadgets, product performance can only be verified with AHRI certified performance. Multistack® MagLev® flooded chillers have been designed from the ground up to lead the industry in performance, reliability, redundancy, and serviceability.

MagLev flooded chillers are available from 70- through 1,200-Tons with a wide variety of compressor combinations and always with the powerful FlexSys® controls platform. FlexSys is the only control system in the world that is capable of controlling mix-matched magnetic levitation compressors on the same refrigeration circuit. In other words, it seeks out the optimal combination of loading using non-identical compressors for maximum efficiency. Our design engineers are able to specify that the most efficient compressor size is utilized at the most appropriate point in the operational envelope.

And, of course, you accrue all the benefits of magnetic levitation technology including high efficiency, oil-free operation, and extreme quietness.

MagLev® Centrifugal chiller modules are available in 80-Ton packages utilizing the industry’s most advanced magnetic-bearing, oil-free compressor technology. MagLev chiller's compressor shafts levitates in a near-frictionless magnetic field, eliminating metal-to-metal contact, and require no oil. An integral variable frequency drive controls compressor speed and capacity to precisely match the load, creating the most efficient modular chiller available. Modules utilize R-134A refrigerant and may be assembled to form chillers from 80- to 640-Tons.