The best way to evaluate your hot aisle containment is by conducting periodic audits of the aisles. Despite being contained, there can still be gaps, leaks or improper installation. By auditing your hot aisles, you can quickly identify —visually and with data — what's happening. I am trying to model a hot aisle containment in my datacenter but I can't get it correct. I have also tried to ad blockers in the small gaps where the legs are in the hyperpod that is used in the DC. The HAC system directs the upward airflow to an AC return system such as a drop-ceiling void. The HAC. ering various aspects, including energy efficiency and cooling ing effectiveness, and improve overall operational performance.