R-438A (MO99) is a non-flammable (A1) HFC blend formulated as a direct R-22 retrofit for air-conditioning and refrigeration. It closely matches R-22 performance, making it a convenient option for servicing legacy systems in line with EU rules on ozone-depleting substances.Gaz Service BV supplies R-438A in sealed cylinders, delivered across Belgium and the EU. Request a quote.