Multistack, LLC products

Airstack air-cooled modules are available in a wide range of capacities and with tandem scroll compressor sets to create chillers with a 10 to 600 ton capacity. Modular design makes adding capacity as easy as purchasing and installing more modules. Numerous options including specialty coatings, stainless steel construction and various control interfaces, make it easy to meet specific customer needs including ducted and sound-sensitive applications. Ideal for limited space installations, including single-side access for airflow and/or service. Suitable for constant and variable flow applications (with optional accessories). Can be factory packaged and shipped on skids with the following accessory modules as an option to include: pumps, strainers, air separators, glycol feeders, storage tanks, expansion tanks and chemical pot feeders.

Available in 10, 15, 20, 30, 40, 50, 70 and 85 ton sizes. Units are designed to connect with field-supplied evaporators. Each module has two independent refrigerant circuits. Refrigerant components are factory installed within the modules. Optional modulating valve for on-board head pressure control. Optional shell and tube condenser; brazed plate standard.

Dedicated Heat Recovery Chillers (DHRC) are ideal for many water-heating applications. Dual and quad scroll modules. Available in 10 to 1,320 ton capacity with fixed speed and True Variable™ speed scroll compressors. Produce hot water up to 140F with R-410A and 175F with R-134a while producing simultaneously chilled and hot water. Eliminate or reduce the need for boilers. Reduce carbon emissions and water consumption. DHRCs feature heating COPs of more than 3.0 and combined COPs of more than 7.0. Control up to 15 modules on a single master controller.

Three to 30 ton capacity HSS units for cooling or heat recovery. Ideal for smaller commercial buildings or zones within a large building. Simple, easy to install, highly efficient stand alone units require minimal floor space. Provides water temps up to 175F. Available in single-phase power models up to 5 ton capacity. Available in up to 30 ton capacity using R-410A or R-134A refrigerant. Single compressor configurations, full-featured digital controls, electronic expansion valves with high and low pressure switches, and unit-mounted thermal dispersion flow switch. Options include double-wall heat exchangers in select sizes, stainless steel cabinets, freeze stat, remote display panel, water pumps, and BAS interface.