What's R1234yf? What's R134a? Automotive HVAC training

Servicing an R1234yf-equipped vehicle can present challenges for shop owners and technicians. This module covers the additional knowledge and specialised equipment required to service such vehicles, and discusses the differences between R1234yf, which is a synthetic HFO refrigerant, and its R134a predecessor.

[scottcpan]

I've successfully converted two vehicles from R1234yf to R134a. A 2015 Ram 1500 and a 2021 Honda Accord which are both working fine. I purchased R1234yf quick couplers that allowed me to use my R134a manifold gauge set, vacuum pump and other tools that I already had. It's very important to completely evacuate the system of all R1234yf, you do not want to mix them.

[ur_a_buS]

why can't we use R600a/R290? Way cheaper and probably just as safe in terms of flammability...Pretty much the same GWP and ODP numbers. Oh right, no one would make any money that way, lolz.

[austinhorton]

you say its not good to retrofit but yet i did with my car and its working better then ever i can expect summer temp to reach 35c with high humidity and car stays cool

[billd.]

I am very Grateful for you sharing your knowledge about these refrigerant system changes and similarities. it is very helpful, informative and well done Thank You!!

[robmueller]

Idk about it's efficiency, but I need that double walled evap line for our r134a systems here in Phoenix when the ambient temp reaches 114 degrees. Fords can't seem to blow cooler than 60 degrees from stop light to stop light.

[ozstickman]

This is what I don’t get. They say it’s safe and not bad but need stronger evaporator and also different equipment that is spark free. Oh also keep the gas under strict guidelines cos it’s flammable. Oh don’t get me started on the price of the shit

[LightsOutPredatorRemoval]

The YF stands for your fucked if your a tech. Machine takes 2 hours to evacuate and recharge. Gotta sit there and baby sit the machine

[luayalmayyahi]

Please I want to ask you, if I can replace R1234yf to R134a in my car, because its very expesive.
What about the efficency between them

[johnnguyen]

Any harmful, damages to the AC system if we retrofit system from R1234YF to 134a !!! If it does what parts and why it got damaged !??? Good question Right !???

[ibrahimalrawahi]

Actually I would like to fill my car with gas 1234a instead of 1234fy cuz it's really expensive...w is your opinion plz??
Car is Nissan Altema 2019

[coreycorey]

Based off of the information you put in this video it appears that I would be better off using propane like Mexico does in my AC system. the regulations Of R 12 And 134 a. That is a bunch of crap it has nothing to do with ozone and more to do with the patient running out .

[funkmaster]

Not accepting that rip can easily converted to R134a. One just need to have experience.

[BertoJim]

Can a 1234yf system be swapped with 134a gas?

[therealRustyShackleford]

Yeah, why be concerned about the flammability of 1234yf when you're sitting on a 1500 pound lithium battery.

[alextepozteco]

You say it's more efficient but its crap I've worked on multiple cars with it and the lowest I can get the systems to cool down is 57°F but I ran both of my cars on that same day one with R134a and the other with R12 and the sentra can get down to 41°f and the 280zx can get to 38°f so that's gonna be an issue hopefully this new crap is just a trend and it will die out and continue using r134a, we already did retrofits on some fleet Hondas back to R134a it was too expensive for them to run they constantly leaked from the compressors and have horrible warranty so its easier to dump the new crap and use to old

[Monza]

wont buy a car with 1234yf, , , staying with r12 an 134a, , , , only reason they change is when dupont patent rights are over, , all about money

[alexk]

R1234 vs R134a, compares it to R12. R134a doesn't damage ozone, reinventing the wheel as usual, while taking all your money.

[TWITCHINRZ]

Does that mean here in Australia we don’t need a licence to use it anymore unlike 134? Does that rip off scheme disappear now?

[maxrfinch]

Cost to evac, diagnose, and refill R134A in my area: $280. cost for R1234YF: $600. 😡

[srimohanmi]

A/C Line with large diameter carry low pressure gas and small diameter carry high pressure liquid