The Tranquility® Vertical Stack (TRM) Series offers an innovative, labor-saving solution for spaces where individual, quiet control of the heating and cooling system is important. Using EarthPure® (HFC-410A)refrigerant, the Tranquility® Vertical Stack (TRM) Series not only protects the environment, it does so while delivering unprecedented comfort, efficiency, and reliability.

  • Sizes 09 (3/4 ton, 2.6 kW) through 36 (3 ton, 10.6 kW)
  • Environmentally-friendly EarthPure® (HFC-410A) zero ozone depletion refrigerant
  • High efficiency rotary and scroll compressors
  • Exceeds ASHRAE 90.1 efficiencies
  • Removable chassis allows staged installation and ease of maintenance
  • Galvanized steel cabinet
  • Unique double isolation compressor mounting for quiet operation
  • TXV metering device
  • Unit or remote-mounted controls available
  • Optional ECM Motor for all models
  • Microprocessor controls standard (optional DXM and/or DDC controls)
  • BACnet, Modbus and Johnson N2 compatibility options for DDC controls
  • Unit Performance Sentinel performance monitoring system
  • Attractive return air panel with hinged access door (“G” panel)
  • Multiple supply air discharge options
  • Stainless steel braided hose kits for connection from piping risers to chassis
  • Eight safeties standard
  • Wide variety of options including disconnect switch and extended range

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