Best in Class. Independently verified.

ATMO Approved is the world's leading industry label for natural-refrigerant cooling and heating — the technology behind millions of refrigeration, chiller, and heat-pump systems worldwide. Each year “Best in Class” manufacturers and contractors must meet strict criteria and demonstrate verified impact. Since 2022, over 90 companies have applied; only 20 have been (Re)Approved. Calculations are run by ATMOsphere — the independent authority on natural refrigerants since 2006 — using a proprietary model that quantifies both avoided CO₂eq and TFA emissions.

Class of 2026 · 8 countries