Humidity levels for a data center are a prime concern for maintaining electrical and computing resources properly as well as ensuring that conditions are optimal for top performance. Which of the…

The correct answer is C. 40 to 60 percent relative humidity. ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) recommends 40% to 60% relative humidity as the optimal range for data centers. Too little humidity (below ~40%) increases the risk of electrostatic discharge (ESD), which can damage sensitive…

Submitted by takeshi77· Apr 18, 2026Cloud Platform & Infrastructure Security

Question

Humidity levels for a data center are a prime concern for maintaining electrical and computing resources properly as well as ensuring that conditions are optimal for top performance. Which of the following is the optimal humidity level, as established by ASHRAE?

Options

A20 to 40 percent relative humidity
B50 to 75 percent relative humidity
C40 to 60 percent relative humidity
D30 to 50 percent relative humidity

How the community answered

(24 responses)

A
8% (2)
C
88% (21)
D
4% (1)

Explanation

ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) recommends 40% to 60% relative humidity as the optimal range for data centers. Too little humidity (below ~40%) increases the risk of electrostatic discharge (ESD), which can damage sensitive electronic components. Too much humidity (above ~60%) can cause condensation and corrosion on equipment. Maintaining this balanced range protects hardware longevity, prevents ESD events, and ensures reliable performance of electrical and computing resources.

Topics

#Data Center Environmental Controls#Humidity Management#ASHRAE Standards#Physical Infrastructure Security

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