What is R-404A?
R-404A is a refrigerant blend made from R-125, R-143a, and R-134a. It is commonly used in medium and low-temperature refrigeration systems such as supermarket freezers, cold storage rooms, and transport refrigeration. Customers choose R-404A for its strong cooling performance and dependable operation compared with older options like R-22.
Systems built for R-404A typically use POE (polyolester) lubricants to maintain compatibility and efficiency. Some older refrigeration setups can be converted to R-404A with the right adjustments, and professional guidance is recommended to ensure reliable results.
R-404A is classified as non-toxic and non-flammable under the A1 safety rating. As the market moves toward lower-GWP choices, many new installations consider alternatives, but R-404A remains widely available for existing equipment that still relies on it
