The more things change… the more they stay the same. The ACHR NEWS released its list of the most popular articles posted in 2021. One again, the COVID pandemic/supply chain issues and refrigerant transition were the most popular.

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1Shortage ‘Perfect Storm’ Strains Construction and Affects HVAC Industry

22021 Top 40 Under 40 HVACR Professionals

3HVAC Industry Works to Get Technicians Prioritized in Vaccine Distribution

4Top 30 HVACR Distributors of 2021

52021 Top Women in HVAC

6HVAC Industry Grapples With Shortages, Indoor Air Quality Claims

7A Guide to Low-GWP Refrigerants

8HVAC Contractors Navigate Shortages and Supply Chain Delays

9Impending Refrigerant Transition Requires Preparation by HVAC Contractors

10An HVAC Technician’s Guide to R-454B