Yes, that's correct! R-407C is a hydrofluorocarbon (HFC) refrigerant that is designed to replace R-22 in air conditioning applications. It is a blend of R-32, R-125, and R-134a and has similar thermodynamic properties to R-22. Many manufacturers have designed equipment to be compatible with R-407C as a replacement for R-22.
In addition to air conditioning applications, R-407C can also be used as a replacement for R-502 in some existing medium-temperature refrigeration applications, such as commercial refrigeration systems.
It's worth noting that R-407C, like other HFC refrigerants, has a high global warming potential (GWP), which means that it has a significant impact on climate change. As a result, many countries have regulations and phase-down schedules in place for high-GWP refrigerants, and are encouraging the use of low-GWP alternatives.
If you are considering using R-407C for your air conditioning or refrigeration system, it's important to ensure that you are using it in compliance with all applicable regulations and guidelines, and that you are properly handling, storing, and disposing of the refrigerant to minimize its impact on the environment. It's also a good idea to consult with a qualified HVAC technician to determine the best refrigerant choice for your specific application.