Overview
ISO/IEC 22237-4:2021 - Information technology - Data centre facilities and infrastructures - Part 4: Environmental control - defines requirements and recommendations for environmental control in data centres. It is founded on the availability, security, and energy efficiency enablement classifications in ISO/IEC 22237-1 and provides guidance on how to manage environmental conditions that affect IT reliability, safety and energy performance.
Keywords: ISO/IEC 22237-4:2021, data centre environmental control, data centre facilities, temperature control, humidity control, particulate control.
Key Topics
The standard covers both requirements and recommended practices for environmental systems that support data centre operations, including:
- Temperature control - specification of control and measurement points for computer rooms and external environments.
- Fluid movement control - air flow management and containment strategies to prevent undesirable circulation.
- Relative humidity control - limits and measurement approaches for external and computer-room humidity.
- Particulate control - filtration and particulate management to protect IT equipment.
- Vibration - mitigation and acceptable levels to avoid damage to sensitive equipment.
- Physical security of environmental control systems - protection and access controls for HVAC and related infrastructure.
Additional technical elements in the document:
- Availability class design options and environmental requirements by space type (computer rooms, telecom spaces, UPS, generator and transformer areas, mechanical and electrical rooms, loading docks, offices, storage).
- Capacity planning for expansion and resilience of environmental control systems.
- Energy-efficiency enablement metrics: temperature, humidity, air pressure measurement, coolant flow rates, heat removal, and use of outside air.
- Interfaces for monitoring and operational data to support management and performance verification.
Applications
ISO/IEC 22237-4:2021 is used to design, specify, commission and operate environmental control systems in data centres to:
- Ensure IT availability and reduce downtime risk.
- Improve energy efficiency and support sustainability targets (reduced carbon footprint, lower operating costs).
- Protect equipment from particulate, humidity and vibration damage.
- Define security requirements for environmental control assets.
Typical users:
- Data centre owners and operators, facility managers, and ICT managers.
- Architects, MEP and HVAC designers, system integrators and contractors.
- Auditors, commissioning agents and maintenance teams.
Related Standards
- ISO/IEC 22237-1 (General concepts: availability, security, energy-efficiency classifications)
- ISO/IEC 22237-3 (Power distribution)
- ISO/IEC TS 22237-7 (Management and operational information / monitoring interfaces)
- Other parts of the ISO/IEC 22237 series covering building construction, cabling and security systems.
Use ISO/IEC 22237-4:2021 when specifying environmental controls to align data centre design with internationally recognized requirements for reliability, safety and energy efficiency.