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Variable Frequency Drives

Variable frequency drives (VFDs) save energy and reduce equipment wear and tear by modulating the speed of fans and pumps in HVAC systems.

Honeywell Building Technologies

Honeywell variable frequency drives (VFDs) maximize energy savings by modulating the speed of fans and pumps in HVAC systems. VFDs, sometimes called inverters, achieve these savings by operating in conjunction with a building automation system (BAS) or independently through its internal PID capabilities. A Honeywell VFD is loaded with labor-saving features, such as startup wizards, PC programming, and an intuitive graphical interface that allows for faster, more accurate commissioning. 

  • SmartVFD HVAC2
  • SmartVFD HVAC with Bypass and/or Disconnect
  • SmartVFD HVAC2

Easy to use and highly reliable, Siemens BT300 variable frequency drives reduce the cost of installation and maintenance while maximizing energy savings. The drive keypad features built-in wizards that get HVAC equipment up and running quickly and accurately. Anyone can safely and quickly commission the BT300 using default parameters that are optimized for typical HVAC applications.

  • BT300
  • BT300 C-Bypass
  • BT300 E-Bypass
  • BT300 VFD NEMA Type 3R Drive and Bypass
Johnson Controls

Johnson Controls variable speed drives are specifically engineered for use with HVAC fan and pump applications. We’ve designed every adjustable speed-drive power unit to utilize the most sophisticated semiconductor technology available, and with highly modular construction, our VSD drives are easily adapted to fit your needs. Our variable frequency drives are the only VFD drives in the industry to provide closed-loop control capabilities with Metasys and Facility Explorer digital field controllers. 

  • VFD FP Series II
  • Series II Micro Drives
  • Enclosed Variable Speed Drives VS3 Series III
  • Open VS Drives VS3 Series 3