Which of the following refrigerants is often compared to R-407C?

R-407C is often compared to R-22 because they both operate in similar applications, particularly in residential and commercial air conditioning systems. Both refrigerants have comparable thermodynamic properties, such as cooling capacity and energy efficiency, which makes R-407C a suitable replacement for R-22 in many systems.

R-22 is a hydrochlorofluorocarbon (HCFC) that has been widely used but is being phased out due to its ozone depletion potential. R-407C, on the other hand, is an HFC blend designed to mimic the properties of R-22 without harming the ozone layer. As a drop-in replacement, R-407C can be used in existing R-22 systems with some modifications, which makes the comparison significant for technicians and manufacturers transitioning to greener alternatives.

Understanding this context helps technicians make informed decisions about refrigerants, especially during retrofitting or replacement scenarios.