Refrigerant R407C is a blend commonly used in residential and commercial air conditioning systems. It has a Global Warming Potential (GWP) of 1774 and zero Ozone Depletion Potential (ODP), making it an environmentally safer option compared to older refrigerants like R22. R407C offers efficient cooling performance and is a popular choice for retrofitting existing systems. However, it requires specific handling due to its blend nature, which can lead to fractionation. Despite this, R407C remains a reliable and effective refrigerant for various HVAC applications.