Is R-134a an HFO?
Daniel Johnson
Published Mar 14, 2026
Is R-134a an HFO?
Refrigerant R-134a, also known HFC-134a, is a hydrofluorocarbon (HFC) refrigerant. HFO-1234yf is a hydrofluoro-olefin (HFO) refrigerant. However, with HFC refrigerants, the atoms are connected by single bonds between the atoms, whereas the atoms in HFO refrigerants at least one double bond between the carbon atoms.
What is a HFO refrigerant?
HFOs (hydrofluoro-olefins) are the fourth generation of fluorine-based gases. HFC refrigerants are composed of hydrogen, fluorine and carbon atoms connected by single bonds between the atoms.
Is HFO-1234yf the same as R-1234yf?
If you’re wondering what the difference is between the HFO-1234yf and R-1234yf, they are the same product; we sell the the Honeywell HFO-1234yf as either 10 or 25 lb cylinders, and R-1234yf as 8 ounce cans. Here is a list of 2018 Manufacturers and Models using HFO-1234yf: Acura – 0.00% (none currently)
What class is HFO-1234yf refrigerant?
hydrofluoroolefins
HFO-1234yf is a new class of refrigerants known as hydrofluoroolefins. These refrigerants are similar to HFC refrigerants except that they have a much much lower Global Warming Potential number.
Is R-1234yf a hydrofluorocarbon?
Opteon™ YF (R-1234yf) is a hydrofluoroolefin (HFO) refrigerant that has the same chemical elements but contains one double bond between one set of the carbon atoms. The double bond makes a big difference. HFC-134a refrigerant has a GWP of 1,300; Opteon™ YF has a GWP < 1.
Is HFO-1234yf an A3?
HFO-1234yf is a Category 1 Flammable Gas. Refrigerants are classified by ASHRAE as A1 (nonflammable), A2L (mildly flammable), B2L (toxic, mildly flammable), and A3 (flammable).
Is R290 an HFO?
The firm says that “the effect that HFO refrigerants have on compressor reliability is of extreme importance to Tecumseh. However, because R290 is classified as an A3 (highly flammable) refrigerant, charge limitations and safety requirements must be taken into consideration, it says.
How much does 1234yf cost?
The national average price of an R134A recharge in 2018 was around $200-$300 with the cost of the previous standard R134A refrigerant at $30 per pound. However, the average current market price of the R1234yf refrigerant is $120 per pound.
What type of oil is compatible with HFO-1234yf?
PAG oil
Four Seasons TEMP Select now offers a PAG oil that is 100% compatible with HFO-1234yf refrigerant.
What can HFO-1234yf be used in?
HFO-1234yf, which is claimed to be a non-ozone-depleting refrigerant, can now be used in air conditioning systems of all new cars and trucks sold in the U.S. The EPA says that HFO-1234yf has a global warming potential a whopping 99.7 percent less than HFC-134a and will help reduce the environmental impact of vehicle …
What is YF R1234yf?
A New Refrigerant for Sustainable Mobile Air Conditioning Opteon™ YF (R-1234yf) is a hydrofluoroolefin (HFO) refrigerant that has the same chemical elements but contains one double bond between one set of the carbon atoms. HFC-134a refrigerant has a GWP of 1,300; Opteon™ YF has a GWP < 1.
Can you mix 134a and 1234yf?
No, you cannot put R-134a into a HFO-1234yf system; here’s why…
HFO refrigerants, or Hydrofluro-Olefins, are a new class of refrigerants that have a much lessened global warming potential than it’s HFC alternatives.
What are HFOs and HFCs?
What are HFOs? HFO refrigerants, or Hydrofluro-Olefins, are a new class of refrigerants that have a much lessened global warming potential than it’s HFC alternatives. One example being the 134a alternative, 1234YF, which is 335 times lower on the global warming potential scale and only four times higher than standard carbon dioxide.
How many cars use 1234yf refrigerant?
Making it’s debut in the early 2000’s it has quickly rose to power and will soon be the dominant refrigerant in the automotive industry. Today, as I write this in October of 2017 there are approximately thirty-five million cars on the road that are using 1234yf.
What are the new HFOs from DuPont?
The three new HFOs from DuPont are as follows: Opteon XP40 – XP40 is designed to replace the 404A HFC refrigerant. Opteon XP44 – XP44 is also designed to replace 404A but on the refrigerated transport side. Opteon XP10 – XP10 is DuPont’s replacement for the automotive 134a Refrigerant.