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.

Find datasheets

Product range

VSH inverter scroll compressors

Danfoss' VSH inverter scroll compressor is a first-generation offering with variable-speed technology for commercial applications in air conditioning and process cooling.

VRJ inverter scrolls

VRJ—Danfoss' first high-tier residential inverter scroll compressor with frequency converter.

Documents

Documents
Type	Name	Language	Valid for	Updated	Download	File type
Catalog	2021 Danfoss Scroll Manifolding Portfolio Catalog	English	Multiple	09 Mar, 2021	3.9 MB	.pdf
Brochure	Brochure Danfoss Inverter Scrolls VZH series - EN	English	Multiple	21 Aug, 2020	1.4 MB	.pdf
Installation guide	Danfoss commercial compressor Crankcase Heater	English; French; Italian	Multiple	03 Jan, 2023	471.2 KB	.pdf
Application guide	Danfoss scroll compressors VZH052-065 - R410A	English	Multiple	24 Oct, 2019	3.1 MB	.pdf
Installation guide	Discharge thermostat kit	German; English; French	Multiple	04 Feb, 2016	103.1 KB	.pdf
Application guide	Guideline Hybrid tandem VSH with SH - R410A	English	Multiple	09 Oct, 2014	2.8 MB	.pdf
Application guide	Guideline Inverter scroll compressors VSH088-117-170	English	Multiple	19 May, 2016	2.8 MB	.pdf
Application guide	Guideline Inverter scroll compressors VSH088-117-170	English	United States	19 May, 2016	2.7 MB	.pdf
Installation guide	Instructions VSH compressors	English	Multiple	27 Sep, 2010	1.0 MB	.pdf
Installation guide	Instructions, VSH compressors	Bulgarian; Czech; Danish; German; English; Estonian; Finnish; French; Hungarian; Italian; Dutch, Flemish; Polish; Portuguese; Romanian, Moldavian, Moldovan; Swedish; Chinese	Multiple	17 Mar, 2011	4.1 MB	.pdf
Catalog	Spare parts and accessories Danfoss Commercial Compressors for hermetic reciprocating and scroll compressors (AC/HP & REF)	English	Multiple	19 Feb, 2025	4.7 MB	.pdf
Installation guide	Surface Sump Heaters - Instructions	English; French; Italian	Multiple	15 Jun, 2017	337.7 KB	.pdf
Installation guide	VZH088-117-170 Compressor	English	Multiple	10 Aug, 2023	831.8 KB	.pdf

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