R-407C

R-407C is a non-ozone-depleting R-22 replacement because of its similar cooling capacity, energy efficiency, and pressures as R-22 in systems, as well as replace R-502 for some existing medium-temperature applications.

Safety Data Sheet Pressure Temp Chart

What is R-407C?

R-407C (a blend of hydrofluorocarbons: R-32, R-125, and R-134a) is a widely used refrigerant in air conditioning and refrigeration systems, primarily designed as a retrofit option for systems originally using R-22. It is an ideal solution for medium and low-temperature applications and has gained popularity in residential, commercial, and industrial HVAC systems. R-407C offers a good balance of efficiency, performance, and environmental impact, with properties similar to R-22, making it a go-to alternative during the transition away from ozone-depleting substances.

Operating at moderate to high pressures, R-407C is compatible with POE (Polyolester) lubricants, ensuring smooth operation in retrofitted systems. While it does not have the same ozone depletion potential as R-22, it still carries a relatively high Global Warming Potential (GWP). As a result, its use is being phased out in favor of lower-GWP refrigerants in line with international regulations, such as the EU F-Gas Regulation and the Kigali Amendment. However, R-407C remains a valuable and reliable refrigerant for existing systems and applications where retrofitting is necessary and no immediate alternatives are available.

Important Note

R-407C should only be handled by certified professionals, such as HVAC technicians or certified refrigeration specialists, to ensure safe and proper use. In systems where R-407C is used as a retrofit for R-22, specialized training and knowledge of the system's design and components are essential to prevent leaks, inefficiencies, or damage. Always follow manufacturer guidelines, safety protocols, and local regulations when handling R-407C to ensure optimal performance and safety.

Key Properties of R-407C

Low Boiling Point

Boils at (1 atm, °F): -43.6, making it efficient for air conditioning and refrigeration systems..

Moderate-High Pressure Operation

Operates at higher pressures than R-22, requiring retrofitting to operate smoothly.

Reduced Energy Efficiency

Offers slightly less energy efficiency compared to older refrigerants like R-22, but it is suitable for retrofitting existing R-22 systems with minimal modifcations.

Zero Ozone Depletion

Has an Ozone Depletion Potential (ODP) of 0, making it safer for the environment.

Global Warming Potential

Has a GWP of 1770, which is significant but lower than some alternatives.

Non-Flammable

Classified as A1 (lowest toxicity, no flame propagation) by ASHRAE.

Technical Specifications

Applications and Usage

Residential Systems

Used in split air conditioning units and heat pumps for residential cooling and heating

Commercial Applications

Commercial air conditioning systems
Rooftop HVAC units
Supermarket refrigeration systems
Medium and low-temperature refrigeration for food storage

Industrial Applications

Cold storage warehouses
Food processing plants
Industrial HVAC systems

Specialized Uses

Laboratory refrigeration systems
Refrigerated transport units for medium-temperature applications

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