R-438A (FreonTM MO99) is a zeotropic HFC blend, which can replace R-22 (HCFC) in residential and commercial air conditioning applications, chillers and low & medium temperature direct expansion refrigeration systems.
Do not use in centrifugal chillers and check with us if they have a flooded evaporator. Use a mineral oil (MO), alkylbenzene (AB) or polyol ester (POE). Climalife recommend using a POE oil for all HFCs.