Danfoss has added new 8.5-ton and 11-ton variable-speed compressors with intermediate discharge valves to its VZH range. The new inverter scrolls are ideal for data center close controls and rooftop units for energy-efficient cooling. These compressors are also a fit for rooftop units, helping OEMs meet new seasonal and part-load efficiency standards, like the U.S. Department of Energy’s (DOE) energy conservation regulations beginning in 2023. Likewise, for chillers, the company said its Danfoss VZH range will enable OEMs to develop a range of systems capable of exceeding the Ecodesign Lot 21 targets coming into effect in 2021.

Currently, VZH compressors are approved for use with R-410A, a refrigerant with a global warming potential (GWP) of less than 2,500.