R134a Réfrigérant Charge : Things You need To Know R134a Réfrigérant Charge : Things You need To Know

If you have been searching for R134a Refrigerant Chart, you are at the right place. Here we will introduce you to all the necessary things you need to know before you head towards your next refrigerant recharge. 

Towards the end, we will also provide you a r134a refrigerant chart pdf which will solve all your doubts related to refrigerant charge prices

How To Recharge Your Car Ac System With R134a Refrigerant?

For all those who are not aware of this, car AC systems typically use R134a refrigerant if the vehicle was built after 1993. To be sure that your car’s air conditioning system uses R-134a refrigerant, check the owner’s manual’s section on refrigerant requirements (you may also check online) or search for the label under the hood. 

Moving on, to recharge the car AC system yourself, follow the steps below:

Step 1: Start your car and turn on the air conditioning.

Step 2: Find your low-pressure port and connect your gauge

Step 3: Make sure the compressor clutch is engaged.

Step 4: Check the pressure in your a/c system

Step 5: Unplug the R134a ac refrigerant top off kit.

Alternatives Available For R134a Refrigerant Charge

The three refrigerants that can be used to replace R-134a are R-1234yf, R-152a, and R-744.


Most automakers use the hydro fluoro olefin (HFO) refrigerant R-1234yf as the preferred alternative for R134a. The 2013 Cadillac XTS was the first vehicle in the United States to employ the new refrigerant. 

R-1234yf is more environmentally friendly than R-134a, with a GWP of 4 (as opposed to 1,430 for R-134a).


R-152a is the propellant used in aerosol sprays known as “gas duster” products, also known as canned air, used to clean computer keyboards and other electronic components. It is a more efficient refrigerant than R-134a for automotive air conditioning. 

Furthermore, its GWP is 124, and its Ozone Depletion Potential is 0. (ODP). However, it is somewhat combustible and can catch fire. Although it is challenging to ignite R-152a using only high-temperature surfaces or sparks, it can be ignited using an open flame.


Carbon dioxide (CO2) is referred to as R-744 and has been used as a refrigerant since the middle of the 19th century, reaching its peak in the 1920s. The use of CO2 as a refrigerant fell after the development of CFCs that functioned at considerably lower pressures. 

Now, while many automakers use R-1234yf in new vehicles, German companies such as Volkswagen, Porsche, Audi, and BMW have committed to R-744 as their preferred refrigerant. They will, however, employ R-1234yf in automobiles marketed in the United States.

Properties Of R134a Refrigerant Gas 

The HFC refrigerant R134a is also known as Tetrafluoroethane (CF3CH2F). After discovering the ozone-depleting effects of CFCs and HCFC refrigerants, the HFC family of refrigerants has been widely employed as a replacement. 

The following are the properties of R134a refrigerant gas:

  1. R134a is non-toxic, non-flammable, and non-corrosive.
  2. R134a has a boiling point of -15.34 degrees Fahrenheit or -26.3 degrees Celsius, which causes it to exist in gas form when exposed to the atmosphere. This is a desirable attribute since the boiling point of a refrigerant should be lower than the intended temperature.
  3. R134a has a high heat of vaporization.
  4. Its auto-ignition temperature is 1418 degrees Fahrenheit or 770 degrees Celsius.
  5. R134a has a critical temperature of 252 degrees Fahrenheit or 122 degrees Celsius.
  6. Light blue is the recognized cylinder color code for R134a refrigerant.
  7. The refrigerant is used as an organic solvent in commercial industries due to its low molecular weight, volatility, lipophilicity, and liquid state at room temperature.

What is R-134a?

R-134a, scientifically called 1,1,1,2-Tetrafluoroethane, is a hydrofluorocarbon (HFC) commonly used as a refrigerant in various fields. 

It has a formula of CF3CH2F. And from domestic refrigeration to automobiles and medicals, HFC has a wide variety of applications. 

Why R-134a?

R-134a is found to have a negligible impact on ozone layer depletion and global warming. Earlier, Chlorofluorocarbons(CFCs) were the prime choice for refrigerants worldwide. 

Later, with studies coming out on CFCs’ negative impacts on the ozone layer, their use was banned across the world. R-134a was presented as an alternative. They have properties similar to CFCs but show a minimal negative impact on ozone and the environment. 

So the ban on CFCs is the reason why you are here looking for r134a r fridge rate ch !

Properties of R134a R Fridge Rate Chart

Before seeking for www xxl com r134a réfrigérantw charge, let’s have a look at some of the important properties concerning your product.

  • It has a chemical formula of CF3CH2F.
  • It has an appearance of a colorless gas.
  • Since it is a gas on atmospheric pressure, its density is quite low, only 0.00425 g/cm3  
  • It has a boiling point of -26.3 °C. Which again reinstates that it exists as a gas at room temperature and pressure. 
  • It has a molar mass of 102 g/mol, which makes a single HFC molecule about six times heavier than water. But since it is a gas and its density is about 200 times less than water, we do not feel the difference. 

How safe is r134a réfrigérant chart pdf?

As discussed earlier, R134a has a negligible negative impact on the environment. But is it safe for day-to-day use? And what are the hazards associated with it? Let’s have a look. 

  • HFCs are safe, non-toxic, and inflammable at room temperature and pressure.
  • They can get ignited at temperatures higher than 100° Celsius. 
  • At even higher temperatures (about 370° Celsius), it decomposes to toxic gases like hydrogen fluoride and carbonyl fluoride. 
  • It is denser than air. Hence, if inhaled in larger quantities, it can cause asphyxiation. Simply saying, if inhaled excessively, it will replace the original air in your lungs, making you run out of oxygen. Asphyxiation is the most common hazard associated with R134a. 

These were some important hazards concerning the use of R134a. But don’t worry, since now you are well aware of them, you can take measures to ensure the proper safety of you and your family. 


R134a is still the refrigerant of most car AC conditioning systems today.  But, as January 1, 2024, the deadline for the ban on R134a refrigerants draws near, newer cars are switching to R1234yf for environmental reasons.So these were all the important points you needed to know regarding www xxxl com r134a r fridge rate chart. Hope you benefited from this post on r134a réfrigérant chart pdf.

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