A car’s air conditioning system starts with the compressor, which compresses low-pressure refrigerant gas into a high-pressure, high-temperature gas. The refrigerant is then sent through hoses to the condenser, where it releases heat and condenses into a liquid. The refrigerant functions by absorbing heat from the cabin air in the evaporator while a fan blows cooled air through the vents.
Upon absorbing heat, the refrigerant evaporates back into a gas and returns to the compressor to continue the cooling cycle. The refrigerant is an important part of the air conditioning system, and it is critical to understand the type of refrigerant used in your vehicle when servicing or recharging your car’s A/C system. Here are the different types of refrigerants used in automotive air conditioning systems.
R12 Refrigerant (Freon)
R12 refrigerant is also known as Freon (a brand name commonly associated with R12) and was the automotive standard refrigerant in the past due to its effectiveness. However, scientists eventually discovered that the widespread use of R12 contributed to ozone layer depletion.
The ozone layer helps filter harmful ultraviolet rays from the sun, so its depletion has serious environmental and health impacts. Therefore, starting in the mid-1990s (around 1994–1995 in the U.S.), the use of R12 in new vehicles was phased out. While older vehicles may still use R12, it is no longer widely available and requires special handling for servicing.
R134a Refrigerant
R134a automotive refrigerant is the most common refrigerant used in vehicles manufactured from the mid-1990s through the late 2010s. It became the standard replacement for R12 due to its lower impact on the ozone layer and improved safety profile, including low flammability.
However, R134a still has a relatively high global warming potential (GWP), which has led to stricter environmental regulations. As a result, many regions, including the United States and Europe, have begun transitioning away from R134a in newer vehicles in favor of more environmentally friendly alternatives.
R1234yf Refrigerant
R1234yf refrigerant was developed as a more environmentally friendly alternative to R134a. It offers similar cooling performance but has a significantly lower global warming potential, making it a preferred choice for modern vehicles.
This refrigerant breaks down much faster in the atmosphere, reducing its environmental impact. It has become increasingly common in newer vehicles and has been widely adopted in Europe since 2011 and in newer U.S. vehicles over the past decade.
One drawback of R1234yf is that it is mildly flammable, unlike R134a. However, it is still considered safe for automotive use and is now the standard refrigerant in many new car A/C systems.
Recharge Your A/C System with the Right Refrigerant
Understanding your vehicle’s refrigerant type is only part of the process. Using the correct product when it’s time to recharge matters just as much. At R & Y A/C Compressors, you’ll find a selection of automotive refrigerant cans designed for easy use and compatibility with common systems like R134a. These options are suited for quick top-offs or full recharges, helping restore cooling performance when refrigerant levels run low.
With ready-to-use solutions and fast shipping from multiple locations, getting your A/C system back to proper operation is simple and convenient.