Environmental Conditions

Most data centers are overcooled and have humidity control issues, which is a valid concern as room temperature and humidity are two of the main HVAC energy drivers. Air management issues should be addressed first, followed by environmental conditions. 


Although most computer room air conditioners (CRACs) are controlled based on the return air temperature, air intake to IT equipment is the important specification to meet. 

  • At Minimum, Follow ASHRAE Guidelines for Data Center Temperature Ranges
  • Even Better, Operate at the Maximum ASHRAE Recommended Temperature Range (80.6°F)
  • Anticipate that Servers will Occasionally Operate in a Higher, but Allowable, Range (89.6°F)
  • Minimize or Eliminate Humidity Control Altogether