Saturday, March 25, 2023

Can You DIY Service R-1234yf AC Systems?

Main Can You DIY Service R-1234yf AC Systems?

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  • #51244

    I think this is a question that is on the minds of a lot of new vehicle owners, especially owners that are used to servicing their own vehicles. Can you service …


    I don't understand, if they are too concern about refrigerant leaking then why don't they have a pressure sensor in the system to detect if the system is leaking or a restrictor to prevent leak in case of a collision? I know this is more complications but new refrigerant is too expensive.

    Justin Roark

    The jug of 1234yf is 1000$ per jug. The good part is that the RobinAir system for the new refrigerant is that when you recover it tests it for contamination

    James Wittkoski

    Fortunately my 2017 Encore still has 134a.

    Michael Nelson

    Bought a new 134a vacuum and guage set from harbor freight, 1234yf can tap and a few adapters and did the ac on our 18 focus after a collision. It can be done but boooyyyyy was it a headache. Anything to do with 1234yf has left hand threads. Good luck.

    Levi Thompson

    We just got the machine for our shop and I asked about it being flammable and said it has to be 3500 degrees before it becomes flammable and all of us techs have to become certified to use the machine

    Nick Mayo

    It's really a pain to deal with. The whole procedure is waaaay longer. It used to be only the 2019 RDX with R1234yf, but now a lot of the new MDX vehicles have it. 

    Another thing I've noticed is the receiver pipe between the TXV and condenser is now a part of the suction tube on some vehicles. The liquid refrigerant has a chamber that's welded around the suction tube where it flows through. They're obviously still separated, but it's all one part now up until it splits again.

    I'm an Acura dealer tech (aka Hondas with more leather) and we are not experiencing what you spoke about the Honda failures. I'm curious, what component is failing? I haven't seen anything A/C related with a high failure rate.

    VW Insanity

    Air has an average molecular weight of about 29 g/mol. R134a is 1,1,1,2-tetrafluoroethylene has a molecular weight of 102 g/mol. In my opinion this upper atmosphere thing is a scam. Same as it was with R12. Just another way to kill off the DIY and drain the pockets of consumers. In my personal opinion!


    Trust me. When its that hot, and that much humidity…it doesnt matter who or what u are, balls will be sweating lol


    R-1234YF…..the YF stands for "You're F*&ked"


    Hank Hill….."I sell propane and propane accessories"

    kevin b

    Okay Eric questions for the new refrigerant is there a different sized Schrader valve injection point on the system or is it the same as 134a this would suck big time and would the pressures be about the same as 134a plus 134a is been used in refrigeration as in your refrigerator and deep freezer

    Brad Noyes

    Propane as a refrigerant is labeled R290


    Gotta make money $$$$$$ 20 years later 1234yf will be phased out by another refrigerant. lol!

    Caleb Chain

    Every newfangled thing that comes out on cars these days, the longer my chevy truck is gonna stay on the road.

    William Todd

    I remember when R134A canisters were $30+ for a can, so given the R1234yf is so new it'll be a matter of time before its $20 or less a can.


    Is that a Honeywell type of price tag or is it in general

    Piri Hern

    You spend 10,000 dollars on a 134 ac machine now the EPA pulls a fast one

    Henri P

    dont understand why they need to replace r134a. can't get much more harmless than the shit thats in PC dusters and air horns. Of course everything will still be DIY serviceable, right to repair, and all that. the prices will come down once the market isn't so small and more of the new systems are on the road. if the new stuff is flammable it makes it easier for the DIYer to vent. just flare it off like the chemical plants do! (joking)

    Abdulaziz Al-zadjali

    Thank you Eric for this informative video
    Point missing I would like mention it
    The oil should be added in system is different than 134a fereon
    Denso clutch type reciprocating compressor use ND oil 8 equivalent to PAG 46 with 134a refrigerant
    While same type compressor use ND oil 12 higher specs than PAG 46 for 1234rf refrigerant


    You are able to "downgrade" the AC system to r134a, it's doable but also a pain, new everything, we did it once, hell of a job but worked, on an merc 180 from 2017, the ac pump clutch died and we decided to try to change everything, money wasn't an issue if anything would fail and was a good learning job, however, I don't really encourage anyone to do it, specially on a vehicle that still was in warranty :), engine out, dash out, 2 days, 6 hands and a few lost hairs. overall, it went around 1200eur, evaporator and condenser fixing points had to be changed, so a tig welder was needed too. Also all ac lines had to washed with methanol to get rid of the oil deposits which are incompatible. Don't do it unless you are really into it, I'd rather just tear an engine apart blindfolded 😀


    Solution: Stop buying new cars and learn how to fix old cars. R12 systems can still be used with other "refrigerants".

    John Donlon

    R-1234yf is just very expensive, I suspect that is because someone has a patten on the manufacture of it and they are making every penny they can on us.

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