Don Gillis

Why Substituting R-410A for R-454B Is a Bad Idea

August 26, 2025

A supply shortage led one tech to charge an R-454B unit with R-410A. The result: no cooling, high pressures, and an expensive mistake in the making.

On Demand As AI workloads and high-density computing push traditional cooling methods to their limits, the data center industry is accelerating the adoption of next-generation HVAC technologies.

In this webinar we will detail what HVAC material buyers and technicians need to know when selecting duct mastics, including matching mastic to substrate, alternatives to liquid mastic, and where UL 181 Listings fit into real world installations.

Articles by Don Gillis

Why Substituting R-410A for R-454B Is a Bad Idea

Sign Up. Stay Informed.

The #1 trusted source for the HVACR industry since 1926