tools for R32 (R410A)”.) Especially, when replacing a refrigerant R22 model with a new refrigerant R32 model, always replace the conventional piping and flare nuts with the R32 and R410A piping and flare nuts on the outdoor unit side. For R32 and R410A, the same flare nut on the outdoor unit side and pipe can be used. By January 1, 2010, there was a ban on the production and import of R-22. 5 As a result, manufacturers of heat pump and air conditioning equipment redesigned their systems to accommodate R-410A, a chlorine-free refrigerant compared to R-22. The refrigerant would soon replace R-22 in the new HVAC equipment. EPA regulations require a ban on the Yes, it is prohibited to mix refrigerants. The correct move is to pull the charge and recharge it with whatever drop-in you are using. The real correct move is to fix the leak. After you mix it, at some point somebody is going to reclaim that refrigerant, and then they're going to have to pay to dispose of it because it is mixed refrigerant. The difference with regards to the environment lies within the GWP (Global Warming Potential). The GWP of R32 is 675, whereas the GWP of R410A is 2,088. For comparison, the GWP of R-508B is 13,396. Furthermore, R32 is about 20% more efficient than R-410A. This brings down operating and maintenance costs. When replacing the R410A, here's what you need to know: R452B: same capacity as R410A, with slightly better efficiency. R454B: slightly lower capacity than R410A but better efficiency; lower GWP. R32: Better efficiency and around 10% more capacity than R410A, depending on application and system design. Source: Danfoss. R 12 Use Mineral Oil or Alkyl Benzene Oil. R 22 Use Mineral Oil, Mixing of POE is acceptable however it is preferred to use the oil that the original charge used. Units: AX, CM, CC T, DT, TC, FM, ACPA4000, AP7003. R134A Use POE oil Units: RDU but no oil needed for this unit on startup. R407C Use POE oil Units: ACRP, ACRD5xx, Stulz. It is good replacement for R12 in the applications where the evaporator temperature is -23 degree C and above. It can be used applications like walk-in coolers, food and dairy display cases, domestic refrigerators, and beverage dispensers and vending machines. R-401b is the mixture by weight of 61% R22, 11% R-152a and 28% of R-124. The change over of refrigerant from R22 to R410 actually started way back in 1992. Due to some environmental regulations that were put in place, many different countries decided to phase out the use of R-22 and replace it with R410a. R410a is more efficient and environmentally friendly than R-22. Differences Between R-22 and R410a R-22 22a. Compatible with most common refrigeration materials and lubricants including R22, metal components, mineral and synthetic (Ester and PAG) lubricants, seals, gaskets, hoses, compressors, and O-rings. 22a can replace R22 refrigerant directly without the modification of the equipment. Industrial process air-conditioning units, which are distinct from commercial and residential air conditioning, provide comfort cooling for operators and protect process equipment. This end-use is often used when ambient temperatures approach 200°F (93°C) and corrosive conditions exist. Industrial Process Refrigeration. irNoHv.