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  1. #1
    Join Date
    Sep 2012
    Location
    Orlando, FL
    Posts
    37

    TXV valve or Fixed

    Really don't understand the difference, but do I want a coil/compressor with a TXV valve or fixed. Units we are looking at are 16 seer Amana Premium or Carrier Infinity heat pumps.

    Thanks

  2. #2
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,184
    You want what the manufacturer calls for. I know Carrier will call for a TXV. At 16 SEER, I have a feeling Amana does too. Or you won't get the high efficiency and on a high SEER unit, could have some humidity issues as the TXV runs a colder coil.

  3. #3
    Join Date
    Feb 2009
    Location
    Tallahassee, FL
    Posts
    6,048
    TXV is the superior metering device. In addition to adjusting to changing temps - it keeps the refrigerant in place between cycles allowing it to pick up right back where it left off.

    Are they more fragile than fixed? Yes. They can even be damaged during install.

    Is it worth it? IMO yes.

  4. #4
    Join Date
    Jun 2001
    Location
    Moore, Oklahoma, United States
    Posts
    4,293
    Most newer units have gone to TXV. Haven't seen anything over 14 SEER that still uses fixed metering.

  5. #5
    Join Date
    Sep 2012
    Location
    Orlando, FL
    Posts
    37
    Thanks for the advice.

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