Product Family

Liebert PDX Compact DX Cooling System, 11-29kW

The Liebert PDX direct expansion cooling system offers the industry’s highest efficiency, protection and capacity per footprint for server room cooling. network closets and other small spaces.

Best Suited For:
  • Banking, Financial and Insurance
  • Data Center/Colocation/Hosting
  • Education
  • Government
  • Healthcare
  • Retail and Wholesale
Warranty: One Year Limited Warranty Against Defects in Material and Workmanship
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The Liebert PDX is highly configurable and available in a wide range of capacities. Available cooling types available include Air; Water/Glycol; Dual Cooling (Water/ Glycol Cooled + Econ-O-Coil), providing full and partial free cooling; Dual Cooling (Chilled Water + Air-Cooled Refrigeration), providing full and partial free cooling; and GLYCOOL™ (Fluid-cooled Economizer and DX Refrigeration System). The units feature variable speed EC fans that reduce motor energy usage up to 80%, compared to standard AC motors, and are more efficient than centrifugal blowers even when operating at 100% fan speed. The digital scroll compressor in the Liebert PDX uses R-410A refrigerant. Condensers on the water/glycol cooled, dual-cooling, and GLYCOOL systems feature motorized control valves, managed by the Liebert iCOM controls. These valves control the water or water/glycol flow and maintain the desired condensing temperature for various entering fluid temperatures. The Liebert PDX offers unique, floor-level air discharge that reduces the mixing of hot and cold air to improve efficiency. Downflow models provide front, left side and right side discharge and upflow models provide front and rear return options.

Model Specifications Overview
PX011, 11kW
37.5 [11]   32.4 [9.5]   1800   77 9/16   34 1/2   34 5/8   600  
PX018, 18kW
61.4 [18]   57.1 [16.7]   2800   77 9/16   34 1/2   34 5/8   670  
PX023, 23kW
78.4 [23]   70.2 [20.6]   3500   77 9/16   34 1/2   34 5/8   670  
PX029, 29kW
98.9 [29]   91.4 [26.8]   4300   77 9/16   34 1/2   34 5/8   700  


Significantly higher efficiency than legacy systems
Compliant with U.S. Department of Energy minimum efficiency standards for computer room air conditioners
EC fans reduce motor energy usage up to 80%, compared to standard AC motors. More efficient than centrifugal blowers even when operating at 100% fan speed.
Unique, floor-level air discharge reduces mix between hot and cold air, improving efficiency
Self-optimizing controls protect against adverse events, providing availability approaching 100% 
No fan belts to maintain and replace


Desiged for small spaces, with Industry’s most compact footprint
Industry’s highest capacity per footprint
Advanced Liebert iCOM unit control monitors hundreds of component data points and provides automated routines for greater unit protection
Optional Liebert iCOM-S supervisory control for harmonizing multiple cooling units 
Variable speed EC Fans
Hydrophilic slab coil
R410A refrigerant
Hot aisle / cold aisle configurations
Infrared and steam gen humidifiers
Electric reheat
All 60 Hz 3-phase voltages, including 575V 

Find Your Area Contact

Products Support Contacts

Showing contacts for Virginia, 20149, USA Change
Vertiv (Liebert Services)
+1 800 543 2378
610 Executive Campus Drive Westerville Ohio 43082 USA
Product areas of focus: Uninterruptible Power Supplies (UPS), Power Distribution, Thermal Management, Integrated Solutions, Racks and Containment
Vertiv Academy – Thermal Management Training
+1 844 841 2665
530 Westar Blvd Westerville Ohio 43082 USA
Product areas of focus: Thermal Management



Performance As Promised

Vertiv, through its Liebert® cooling systems, is the first and only data center and telecom cooling system provider based in the U.S. to have its products earn the AHRI Certified mark from the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) under its new Datacom 1360 program.

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