Precision Cooling Tool
CRAC / CRAH Sizing Calculator
Estimate required precision cooling capacity for technical rooms and small data-center spaces. Size cooling units based on IT load, sensible heat ratio, derating, target utilization and redundancy.
Sizing inputs
Cooling load and unit assumptions
Use this as a planning estimator for precision cooling. Final design must be checked against equipment datasheets, airflow paths, room layout, redundancy requirements and HVAC engineering review.
Design interpretation
Capacity and redundancy check
The result below explains how many cooling units are required for the selected redundancy strategy.
Documentation
Copy planning summary
Copy the CRAC/CRAH sizing result into Jira, ServiceNow, Word, Excel, e-mail or a project note.
How to use
- Enter the IT load and estimated UPS / power losses.
- Add other room heat such as lighting, people or non-IT equipment.
- Select the sensible heat ratio, unit derating and target utilization.
- Choose N, N+1 or 2N redundancy depending on project requirements.
- Review the required number of active and standby units.
Reference conversions
1 kW = 3,412.14 BTU/h. 1 refrigeration ton = 12,000 BTU/h ≈ 3.517 kW. Airflow estimate uses approximately 1.2 kg/m³ air density and 1.005 kJ/kg·K specific heat.
Need help with your infrastructure project?
ITCOREOPS can support cooling checks, rack power planning, structured cabling, documentation, labeling, testing and operational handover for technical rooms and data centers.
Contact ITCOREOPS →Learn more
Infrastructure Support
Need help with your infrastructure project?
For professional infrastructure engineering, structured cabling, rack environments, power distribution, cooling and DCIM workflows, visit ITCOREOPS.
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