Liebert Custom Air Handling Systems

Liebert free cooling evaporative cooling systems transform data center design and meet the efficiency and availability needs of the largest, most complex data center environments. Comprehensive configuration and project management services ensure that our solutions fit each customer’s specific requirements.


Complete range of solutions

  • Indirect Evaporative
  • Direct Evaporative
  • Chilled Water
  • Direct Expansion
  • Comprehensive configuration and project management services


Revenue Enhancement

  • Rapid deployment for speed to market
  • Minimized use of white space Visibilty into multi-tenant SLAsCost reduction
  • Energy and water efficiency Lower-cost deployment
  • Higher productivity and less maintenanceRisk management
  • Modular redundancy
  • Automated controls protection routines
  • Operational security
  • Highly experienced engineering and implementation team

Tech Specs

SizeAir FlowConfigurations
Liebert CWC Chilled Water Air Handler200 –
600+ kW
25,000 – 80,000+ CFMIndoor Unit – Downflow, Upflow, & Horizontal Airflow
Liebert EVD Direct Evaporative Air Handler150 –
600+ kW
20,000 – 80,000+ CFMData center, gallery, rooftop or external building perimeter
Liebert EVI Indirect Evaporative Air Handler150 –
400+ kW
20,000 – 60,000+ CFMRooftop or external building perimeter
Liebert DSC Direct Expansion Air Handler150 –
600+ kW
20,000 – 80,000+ CFMRooftop or building perimeter

Unit Construction

  • High-strength thermal-break construction with 2” foam-injected walls, doors and flooring providing an R-value of R12 for greater efficiency and durability
  • Standard Casing Ratings
    • DLC of 5.0
    • Panel deflection of L/250
  • Frame and removable panel design allowing for service or replacement of large internal components
  • Welded or bolted-base construction for high durability and strength
  • Standing-seam roof construction eliminating water infiltration
  • Optional 4” enhanced casing offering greater energy efficiency with an R-value of R24 and additional acoustical and corrosive environment protection alternatives
    • Leakage rate of less than 1% at 10”
    • Panel deflection of L/400 at 10”
  • With Proper Maintenance, Unit Construction Engineered to Last Over 30+ Years


  • EC and Direct Drive Fans with VFD arranged in individual or fan arrays
  • Variable & Digital Compressors
  • High Efficiency Aluminum Air-to-Air Heat Exchanger – up to 66% efficiency dry and 78% efficiency wet
  • Multi Stage Direct Evaporative Media
  • Optional Evaporative Condenser

Trellis Installed