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  1. #66
    Join Date
    Jun 2003
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    Tampa Bay, FL.
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    Quote Originally Posted by Mr Bill View Post
    Thanks Marc! that will work!

    Edit: As I re-read this, it only says it would void the mfg. warranty. Well if you have a 20 year old system and your dropping in another refrigerant to top off the 22, there would probably be no warranty to worry about, right? This is very confusing for a only High School grad.
    To me, it reads like the Ten Commandments. "Thou Shall not mix."


    Sent from my iPhone using Tapatalk

  2. #67
    Join Date
    May 2014
    Location
    Bay Area California
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    22,100
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    What if it was for a piece of equipment in an operating room and if you don't do it, the patient will die?


    Quote Originally Posted by hydra View Post
    To me, it reads like the Ten Commandments. "Thou Shall not mix."


    Sent from my iPhone using Tapatalk
    If you were a real tech, you'd solder a relay on that board and call it good to go.

    I do a triple evac with nitro to remove non condensables.

    I use 56% silver on everything except steel.

  3. #68
    Join Date
    Sep 2008
    Location
    VA
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    3,417
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    If you're mixing, 407c is not the correct choice.
    "The only true wisdom is in knowing you know nothing" Socrates

  4. #69
    Join Date
    Feb 2013
    Location
    Sonora, California, United States
    Posts
    4,405
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    Quote Originally Posted by hydra View Post
    If you charge a blended refrigerant by vapor, then you are changing the chemical formula due to the different evaporation rates of the individual ingredients.


    Sent from my iPhone using Tapatalk
    funny I know this for a unit leaking but hadnt crossed my mind for charging....

  5. #70
    Join Date
    Jun 2019
    Posts
    1
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    We have a huge customer base and high profitability/cust satisfaction. We top off and mix w 407c/22 with no trouble.
    I was in the field during the 12/502 use and phase out and learned alot. Then the 410 / 22 days came and we adapted. Does not work on low seer heat pumps, but the “field tests” for resi and light comml is proven in our book.

  6. #71
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    21,384
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    Quote Originally Posted by Daihood View Post
    We have a huge customer base and high profitability/cust satisfaction. We top off and mix w 407c/22 with no trouble.
    I was in the field during the 12/502 use and phase out and learned alot. Then the 410 / 22 days came and we adapted. Does not work on low seer heat pumps, but the “field tests” for resi and light comml is proven in our book.
    Now when I come behind you and legally recover I have to pay to dispose of the whole cylinder because some A$$ Whip mixes refrigerants.


    Thanks a LOT you *(&^$@#@^*

  7. #72
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    30,460
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    Quote Originally Posted by Daihood View Post
    We have a huge customer base and high profitability/cust satisfaction. We top off and mix w 407c/22 with no trouble.
    I was in the field during the 12/502 use and phase out and learned alot. Then the 410 / 22 days came and we adapted. Does not work on low seer heat pumps, but the “field tests” for resi and light comml is proven in our book.
    Please don't do two things:

    1) post in two-year-old threads, and

    2) don't post publicly that you are violating federal regulations. It is illegal to mix refrigerants. Only refrigerant manufactures can mix refrigerants.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
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  8. #73
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    6,423
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    Quote Originally Posted by Daihood View Post
    We have a huge customer base and high profitability/cust satisfaction. We top off and mix w 407c/22 with no trouble.
    I was in the field during the 12/502 use and phase out and learned alot. Then the 410 / 22 days came and we adapted. Does not work on low seer heat pumps, but the “field tests” for resi and light comml is proven in our book.
    Publicly declaring that you’re a hack is not the best way to introduce yourself on a site for professionals.
    AOP Rules: Rules For Equipment Owners.

    Free online load calculator: http://www.loadcalc.net/


    There = not here. Their = possessive pronoun. They're = they are
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    Questions should end with a question mark "?" Statements end with a period "."

  9. #74
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    21,384
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    Quote Originally Posted by Daihood View Post
    We have a huge customer base and high profitability/cust satisfaction. We top off and mix w 407c/22 with no trouble.
    I was in the field during the 12/502 use and phase out and learned alot. Then the 410 / 22 days came and we adapted. Does not work on low seer heat pumps, but the “field tests” for resi and light comml is proven in our book.
    Care to post the name and address of this Highly Profitable Company? Maybe we can be the 1st to collect the finders fee!

  10. #75
    Join Date
    Nov 2010
    Location
    Cincinnati, OH
    Posts
    507
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    I'm seeing a lot of guys ditching empty jugs at the supply house and there are way more 427a than 22. Been wondering if they're recovering and charging, I'm guessing not.

  11. #76
    Join Date
    Jan 2010
    Posts
    15,912
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    Is there a mixing P/T chart out there somewhere or do you do the math ?

  12. #77
    Join Date
    Sep 2002
    Posts
    24,789
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    After you do this what P/T chart do you use to accurately calculate the system performance?

    PHM
    --------


    Quote Originally Posted by Daihood View Post
    We have a huge customer base and high profitability/cust satisfaction. We top off and mix w 407c/22 with no trouble.
    I was in the field during the 12/502 use and phase out and learned alot. Then the 410 / 22 days came and we adapted. Does not work on low seer heat pumps, but the “field tests” for resi and light comml is proven in our book.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  13. #78
    Join Date
    Jun 2002
    Location
    Dacula, GA
    Posts
    19,436
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    Quote Originally Posted by Poodle Head Mikey View Post
    After you do this what P/T chart do you use to accurately calculate the system performance?

    PHM
    --------
    I believe it's called the "cold beer can" performance test. Thank you very much
    "I could have ended the war in a month. I could have made North Vietnam look like a mud puddle."

    "I have little interest in streamlining government or in making it more efficient, for I mean to reduce its size. I do not undertake to promote welfare, for I propose to extend freedom. My aim is not to pass laws, but to repeal them. It is not to inaugurate new programs, but to cancel old ones that do violence to the Constitution."
    Sen. Barry Goldwater

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