The Danfoss CO₂ adaptive liquid management (CALM) solution, which fully utilizes all of an evaporator's surface area and improves the energy efficiency of transcritical CO₂ refrigeration systems by as much as a 10 percent, received top honors in the 2020 AHR Expo Innovation Awards program.

A panel of third-party ASHRAE member judges selected the annual Product of the Year from the year’s 10 AHR Expo Innovation Award winners. The CALM solution had previously been named the 2020 AHR Expo Innovation Award winner in the Cooling category.