Why Is R-134A Being Phased Out? When Is the Phaseout Expected to Conclude? Like a lot of '90s relics, R-134A has not aged well. It was known then that 1,1,1,2-tetrafluoroethane could potentially contribute to acid rain and that its ozone layer depletion potential was high.
The short answer is that the Global Warming Potential (GWP) of HFC-134a is significant and there are replacement gases available that have less environmental impact. The EU has banned most uses of HFC-134a.
A rule proposal by the US Environmental Protection Agency (EPA) provides that all high-GWP HFCs, including R134a, R404A and R410A, will be banned in most new refrigeration equipment from January 1, 2025.
The US EPA is to ban a host of high GWP refrigerants including R404A, R134a, R407C and R410A in certain new products from as early as January 1, 2021.
A High-Performing Alternative to R-134a
Opteon™ XL10 (R-1234yf) refrigerant is a non-ozone depleting (ODP) hydrofluoroolefin (HFO) option that meets the industry's growing demands for sustainable, safe, and effective solutions.
Still, the answer is an emphatic, “No.” Not only would a retrofit of this type negate the environmental benefits of R-1234yf, but it would also be a violation of Federal Law under Section 203 of the Clean Air Act: “tampering” with a vehicle's emissions control device.
While some existing systems can still use R134a, many newer HVAC units are switching to eco-friendly refrigerants. Cars manufactured after 2021 in the United States can no longer use R134a and an alternative must be used. Due to R134a's high GWP, it's unsuitable for new equipment in the long run.
The GWP for R-134a refrigerant is 1,430, making it 1,430 times more harmful than carbon dioxide when released into the atmosphere. There are three refrigerants that can be used to replace R-134a: R-1234yf, R-152a, and R-744.
Adapters to convert an R-134a manifold gauge set to be able to connect to an R-1234yf system are readily available, so along with eventual availability of a recovery-only machine, the opportunity to convert an R-134a system to R-1234yf exists.
According to its manufacturer, Chemours, use of R-1234yf has grown so much since the refrigerant replaced the long-established R-134a that it's now used in 95% of new cars sold in the U.S. An estimated 220 million cars on global roads are also using it.
134a is banned for new LD vehicles in the U.S. as of October 2024. 134a production is being reduced by EPA [Environment Protection Agency] mandate for all HFCs in the U.S. 1234yf could possibly be caught up in PFAS bans in Europe and U.S. unless exemptions are made.
Prolonged exposure to high levels of 1,1,1 2 tetrafluoroethane could result in some health issues. (The Occupational Exposure Limit (OEL) for R134A is 1000ppm for an 8 hour time weighted average exposure.) If there is a catastrophic failure of the system, leave the area and report to Data Center Operations Immediately.
R-134a is an HFC refrigerant and cannot be vented under the Venting Prohibition because it is a non-exempt substitute of CFCs and HCFCs.
No, the compressor will fail. These two refrigerants have very different properties. One of R22 and R134a is high pressure and the other is low pressure. They don't mix chemically and don't have the same boiling point, leading to inefficiencies and eventual compressor failure.
R-454B is the new refrigerant in 2024. By 2025, the EPA's required phaseout of R-410A will be in full effect, with production, importation, and distribution no longer allowed. HVACR businesses must be evaluating their current choices in coolant and ready to make the jump.
R-12 and R-134a are known to be very efficient at cooling but are not as energy efficient as 1234YF. Therefore, cars with 1234YF systems can have better fuel efficiency and emit fewer greenhouse gases.
Vehicles with R-1234yf have different service fittings than R-134a vehicles to prevent cross-contamination with different refrigerants. Also, it's illegal to put R-134a or any other refrigerant into a car originally equipped with R-1234yf.
Most cars hold between 28 and 32 ounces of refrigerant (or about 2—3 12oz cans), however larger vehicles and those with rear A/C will likely hold more. Check your vehicle manual for the system capacity for your specific vehicle.
When was the 1234YF introduced? The new Freon that is being used in vehicles was first introduced in 2013. Only a few vehicles had 1234yf in them. There are still vehicles out there that use 134a Freon.
Small cans of non-exempt MVAC refrigerant (i.e., containers designed to hold two pounds or less of refrigerant) that have unique fittings, and self-sealing valves can continue to be sold to persons without certification for DIY use on their vehicles.
Years later, R-134a was found to contribute to global warming, and now it too is being phased out . Enter R-1234yf. R-134a and R-1234yf do have many similar properties. That's because R-134a is a hydrofluorocarbon (HFC) while R-1234yf is a hydrofluoro-olefin (HFO) refrigerant.
Possible alternatives to R-134a
Attention is increasingly focused on low-GWP refrigerants that are hydrofluoroolefins (HFO). R-1234yf in particular is often seen as a possible alternative to R-134a. The GWP value of R-1234yf is 4, which means it has a very low global warming potential.
R134a has been found to have a lot of greenhouse gas potential, as it can end up in the atmosphere and take forever to break down. For that reason, all new vehicles sold in America after the year 2021 can no longer use this type of refrigerant.
R134a is not an ozone-destroying agent, but it is a greenhouse gas, and is illegal to vent as well.
R-410A is a refrigerant that is classified as a greenhouse gas with a high global warming potential and a negative impact on the climate. It is being phased out for a more environmentally friendly solution for HVAC systems.