What Is Air Cooling for Data Centers?

Air cooling is a key thermal management approach in data centers, especially for facility-level heat rejection. Air coolers (dry coolers) transfer heat from the chilled-water or glycol loop to ambient air, enabling reliable, low-energy cooling and supporting free cooling operation in suitable climates.

Air cooling plays a critical role in both:

• Traditional HVAC-based data centers

• Modern liquid-cooled facilities (as the ultimate heat rejection source)

This makes air coolers essential infrastructure in today’s high-density computing environments.