R-134a

R-134a is one of the worlds most used refrigerants, as it is very diverse and widely embedded in automotive, commercial, and residential air conditioning systems, across the world.

Safety Data Sheet Pressure Temp Chart

What is R-134a?

R-134a (1,1,1,2-Tetrafluoroethane) is a widely used hydrofluorocarbon (HFC) refrigerant, designed primarily for medium-temperature refrigeration and air conditioning applications. It has been a key choice in automotive air conditioning systems, domestic refrigerators, and commercial refrigeration units. Known for its stability and efficiency, R-134a operates at moderate pressures and delivers reliable performance across various conditions.

Systems utilizing R-134a are designed to work with POE (Polyolester) lubricants for compatibility and efficient operation. Although retrofitting older systems to use R-134a is possible with professional modifications, its use is gradually being phased down under global regulations like the Kigali Amendment and EU F-Gas Regulation. Lower-GWP alternatives, such as HFOs, are replacing R-134a in many applications, but it remains a reliable and non-toxic A1-rated refrigerant for existing systems and specialized uses.

Important Note

R-134a should only be handled by certified professionals, such as HVAC technicians or certified automotive mechanics, to ensure safe and proper use. In the automotive setting, specialized training is required to prevent leaks, inefficiencies, or damage to the vehicle's air conditioning system. Always follow manufacturer guidelines and safety protocols.

Key Properties of R-134a

Low Boiling Point

Boils at (1 atm, °F): -14.9, making it efficient for automotive AC systems.

Low Pressure Operation

Operates at lower pressures than R-22, requiring similar but differently designed equipment.

Reduced Energy Efficiency

Offers less energy efficiency compared to older refrigerants like R-22, but better than R-1234yf.

Zero Ozone Depletion

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

Global Warming Potential

Has a GWP of 1430, 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

Limited use, primarily in small-scale cooling appliances and specialty equipment

Automotive Applications

Vehicle air conditioning systems (cars, trucks, and buses)
Refrigerated transport units for medium-temperature applications

Commercial Applications

Display refrigerators and freezers
Vending machines
Beverage cooling systems

Specialized Uses

Medical-grade cooling equipment
Laboratory refrigeration systems
Aerosol propellants in specific applications

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