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Thread: superheat

  1. #1
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    Sep 2010
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    huntsville al
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    superheat

    is it worth finding super heat or subcooling if the units are mismatched

  2. #2
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    Jan 2008
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    Why would you not calculate superheat and subcooling on every system?

    Sorry not allowed to give DIY here. Call a pro.
    Gotta have the right tool for the job!

    Where is all the stuff MADE IN THE USA?

    "Thats what we do Troy. Incredible, Invisible, Imbelivable things. We are an Unseen, Unknown, Unvincible fraternity of craftsman.."

  3. #3
    Join Date
    Sep 2010
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    huntsville al
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    iam an tech and i have other service tech saying with mismatched units it is not that accurate

  4. #4
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    Jan 2008
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    Quote Originally Posted by kenlafountain View Post
    is it worth finding super heat or subcooling if the units are mismatched
    Dude I'm sorry but I dont understand the question here.. Why would you not?

    Are you in this trade or what?
    Gotta have the right tool for the job!

    Where is all the stuff MADE IN THE USA?

    "Thats what we do Troy. Incredible, Invisible, Imbelivable things. We are an Unseen, Unknown, Unvincible fraternity of craftsman.."

  5. #5
    Join Date
    May 2010
    Location
    Oxford, UK
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    336
    Mismatched systems will find a balance point somewhere, its up to you as a tech to make it the best balance point for the systems life and customers pocket.

  6. #6
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    Sep 2010
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    huntsville al
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    i use a fieldpiece guilde on each call i was at the supply house and two old times said that with mismatched airhandler and cond it was not worth the effort i take care of about 600 apts and all most all units over the years are mismatched. this does not make sense to me but with only 10 years exp i was just asking

  7. #7
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    Sep 2010
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    huntsville al
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    thank you that's what i have been doing

  8. #8
    Join Date
    Feb 2007
    Location
    Corpus Christi, TX
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    1,773
    superheat and subcooling should be done on every system.

    2 pressures, 4 temperatures = success

    especially on a mismatched system you could cause damage of the proper sh/sc isnt achieved.
    Testing....Signature on Full Site Forum

  9. #9
    Join Date
    Aug 2010
    Location
    Owensboro, Kentucky
    Posts
    11
    TC said it best "2 pressures, 4 temperatures = success". These are manufacture system set point to ensure system efficiency. If you charge units accordingly then you have returned the unit back to factory specs. If your still having trouble understanding just email me and I will be glad to go in greater depths, I think all techs, rookies and veterans should go back to the basics as most of the time the problems we encounter are simple, we just tend to forget the basics. Thank You

  10. #10
    Join Date
    Mar 2009
    Posts
    37
    Being the system is mismatched it might be harder to determine the ideal superheat and subcooling, but you still need to look at these values. Remember the compressor is a vapor pump. You can not compress liquid so you better have SH. If you have a TX valve it will automatically adjust to maintain a certain SH, so you have to check charge by subcooling.

  11. #11
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    Sep 2004
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    Kansas City, Kansas, United States
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    yeah!
    thats alot of effort!!!!!!!!!!!!!!!!!
    man i am tired just thinking of all the effortit takes to measure superheat!


    Quote Originally Posted by kenlafountain View Post
    i use a fieldpiece guilde on each call i was at the supply house and two old times said that with mismatched airhandler and cond it was not worth the effort i take care of about 600 apts and all most all units over the years are mismatched. this does not make sense to me but with only 10 years exp i was just asking
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  12. #12
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    Jan 2004
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    Lancaster PA
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    Generally, people that say its not worth the effort.
    Don't know what the readings are telling them in the first place.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  13. #13
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,832
    what if your wife says to you?

    NO! it is not worth the effort!


    Quote Originally Posted by beenthere View Post
    Generally, people that say its not worth the effort.
    Don't know what the readings are telling them in the first place.
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

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