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  1. #1
    Join Date
    Jun 2010
    Posts
    5

    Why not R-134a in residential AC?

    Why have we not used R-134a refrigerant in residential A/c systems? I have worked on many R-12 residential systems in past years and lots of R-12 commercial systems. There must be some reasoning in going to R-410, other than the money aspect.

  2. #2
    Join Date
    Aug 2007
    Location
    Winter Haven, FL
    Posts
    4,380
    The suction line sizes would have to be dramatically increased.

  3. #3
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,443
    Carrier had one before the 410 days.

  4. #4
    Join Date
    Nov 2005
    Location
    India
    Posts
    46
    When the refrigerators and car Ac's are with R-134a It can be used for residential also. Only reason I could apprehend is the most of the coils / chasis for WAC are made for R-22 and probably R-410 is closer to that.

    In fact for residential it is preferable to go for R-134a as it is safer and lower pressure wne compared to R-410

  5. #5
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,855

  6. #6
    Join Date
    Jun 2010
    Posts
    5

    Hmm

    I am not a big follower of 410a and can not say exactly why. Perhaps, this is my rebelliousness. I just think there could be room for other choices, unless there is an oil carrying problem, capacity problem, etcetera. Considering that many mobile units have capacities equating to a 5 ton home unit, I question a capacity problem. The oil situation is still something to be considered. If I was to initiate manufacturing of a new A/C line, could I utilize, realistically, R-134a as my refrigerant? I think this is my real question.

  7. #7
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,064
    Quote Originally Posted by Skeizer View Post
    I am not a big follower of 410a and can not say exactly why.
    I think its the pressures I dislike most. I was working on a water cooled indoor package unit and the condenser water flow was low so I had the head pressure at 600psi. I put gloves on when i took off my high side gauge, I didnt know if the valve core would hold back the 600psi.

    I would rather stick to 22 or 407c or 134.

  8. #8
    Join Date
    May 2007
    Location
    Ct
    Posts
    499
    Quote Originally Posted by y7turbo View Post
    I think its the pressures I dislike most. I was working on a water cooled indoor package unit and the condenser water flow was low so I had the head pressure at 600psi. I put gloves on when i took off my high side gauge, I didnt know if the valve core would hold back the 600psi.

    I would rather stick to 22 or 407c or 134.
    My exact reason for using service valves on my hose ends. backing the knob off closes the core without any chance of getting my fingers fried.

  9. #9
    Join Date
    Feb 2004
    Location
    Midwest
    Posts
    9,932
    You guys just put a visual in my head about what the pressures in a car AC could get up to if they used 410A.

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