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Thread: 401B

  1. #1
    Join Date
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    401B

    Could you share your knowledge and experiences with 401B. I recently came across a compressor with a tag that it had been changed to 401B. I have no experience with this refrigerant. At what applications is it best used?

  2. #2
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    Jul 2007
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    regina saskatchewan
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    Artificial Intelligence is no match for Natural Stupidity

  3. #3
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    Guayaquil EC
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    Quote Originally Posted by kerreckt View Post
    Could you share your knowledge and experiences with 401B. I recently came across a compressor with a tag that it had been changed to 401B. I have no experience with this refrigerant. At what applications is it best used?
    R401B is primary intended as an interim service replacement refrigerant for low temperature R12 systems.

    Since no R12 freezers have been made since about 1993, the likelihood of needing it becomes less every day. With the high cost of this refrigerant today, it's not likely you'll go running out to buy 30 lbs to charge up a 2 lb system that may well be the last R12 LT system you'll ever see.

  4. #4
    Join Date
    Nov 2005
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    good sweet juice never had any problem with it
    again what application ? you cannot use for ice cream
    -15* evap

  5. #5
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    May 2008
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    I was thinking of using it for a walk in freezer.

  6. #6
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    Quote Originally Posted by kerreckt View Post
    I was thinking of using it for a walk in freezer.
    what kind REF do you have before ?

  7. #7
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    May 2008
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    I will be putting a new condensing unit on a box that had R502 in it until it died.

  8. #8
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    Sep 2008
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    Quote Originally Posted by kerreckt View Post
    I will be putting a new condensing unit on a box that had R502 in it until it died.
    Go with R404a if you are changing the condensing unit. It will work fine w a 502 evap. You won't even have to change the txv, just make sure to get all the mineral oil out before you switch to the POE oil.

  9. #9
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    May 2008
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    I usually use 404a. I had seen 401b used and thought there might be some compelling advantage......thanks

  10. #10
    Join Date
    Nov 2005
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    Quote Originally Posted by kerreckt View Post
    I usually use 404a. I had seen 401b used and thought there might be some compelling advantage......thanks
    R-404a should be your choice

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