R-404A is being used by OEMs in new equipment and also on retrofitted equipment. However, because of its high global-warming potential (GWP), the U.S. Environmental Protection Agency (EPA), under its ...

There's a simple rule in the industry that HFC-404A refrigerant needs to be used with POE oil. Yet there are reports of refrigeration systems that had been running on HCFC-22 being converted to R-404A ...