Mammoth Variable-Refrigerant Flow (VRF) systems let you heat and cool spaces simultaneously while using the least amount of energy possible. The result is optimal comfort with minimal energy bills. Our systems are easy to spec, easy to install and network, and easy to maintain.

V5 VRF Systems

  • Combine multiple outdoor units for greater capacity
  • Up to 1,000 meter (3,280 ft.) total piping length
  • Up to 80 indoor connections
  • Coated fins for increased performance and greater corrosion resistance

VRF Air Handling

  • Ducted units
  • Ceiling cassettes
  • Wall-mounts
  • Consoles
  • Universal floor/ceiling types

VRF Controls

  • All indoor units are shipped with wireless remote (ducted type are shipped with wired controller). Control options range from individual wireless remotes, a variety of wired central controllers and BACnet and Modbus gateway controllers.

VRF Multi-Zone Commercial Catalog


Download our
VRF Selection Software

To use our VRF selection software:
  1. Click the download button.
  2. Save the file on your computer. (Please note the software is compatible with Windows PCs only.)
  3. Locate the downloaded file and double-click it to launch the installation process.
  4. Once installed, the program may be launched from the Start Menu.








Software may be updated periodically. Please check back for updated versions or look for notifications on eNORA. At this time, we have two known issues and recommend users do NOT use the load calculation functionality or follow the electrical guidance. Users must manually enter building load into the selection software and must follow applicable electrical codes in the design and installation of VRF systems.