Variable-speed inverter scroll compressors

Unparalleled part-load and seasonal efficiency

Danfoss VZH, VSH, and VRJ inverter scroll compressors for commercial air conditioning deliver the highest possible cooling capacity using variable-speed technology. These compressors provide step-less modulation and are qualified and pre-equipped for tandem configurations.

Variable-speed technology offered in Danfoss inverter scroll compressors, with its high part-load and seasonal efficiencies, is one of the best ways to address the challenges posed by ever-changing energy regulations. Inverter scroll compressors also offer precise cooling and humidity management, low start-up current, and more.

Features and benefits

Capacity modulation adapts motor speed to vary load continuously, quickly, and smoothly for great comfort and reliability
Accurate temperature control, low starting current, high energy efficiency, and low acoustic level with variable-speed technology
Short-cycling is limited by user-defined minimum run times.
Lead-free polymer bearing with excellent performance under diverse loads and speeds
Permanent magnet motor maintains efficiency at all speeds
Driver-managed motor protection
Range: 4–52 TR (including hybrid tandem); 15–184 kW
Patents
- Oil injection system

blueprint of inverter technology in Danfoss A/C systems

Inverter technology in A/C systems

Watch an introduction to variable speed technology that enables sustainable air conditioning.

VZH datasheets

Find datasheets for various VZH compressor code numbers.

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Product range

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Documents

Documents
Type	Name	Language	Updated	Download	File type

Software

The truth is Cool(selector®2)

Coolselector®2 features unbiased calculations for the selection of refrigeration and air conditioning components based on the user’s requirements or based on standard operating conditions.

Try Coolselector®2 now