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  1. #1
    Join Date
    Jun 2008
    Location
    va
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    800

    scrolls to recips

    I noticed a thread from a couple days ago about someone changing out a recip compressor to a scroll.....How many of you have replaced a scroll with a recip? I have done several on units out of warranty where the customer did not want to replace the entire unit or system. I have always used a techumseh and had great results along with a good flush when needed, suction line drier depending on severity of burnout, and vacuum. Some guys have said it shouldn't be done, but I have. Scrolls too, are an expensive replacement. My opinion, scrolls don't hold up as well as a recip, especially on a loss of charge situation where the unit goes into a vacuum for a long period of time, or should I say for a scroll, a short time before death!

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,758
    Depends what size compressor.

    Are you matching the compressor up for performance, or just putting the same BTU size in.
    You should match them for performance.
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  3. #3
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,641
    would never consider doing it, my scroll reliabilty has been incredible.

    if anything install a scroll with pressure switches for protection.

  4. #4
    Join Date
    Jun 2008
    Location
    west point, ga.
    Posts
    328
    Why not put back what goes back...........when posible.

  5. #5
    Join Date
    Aug 2007
    Location
    Clearwater, Fl
    Posts
    358
    We always replace with what was there originally. If the system does not have high or low pressure safeties we will add them.

    In warranty or out of warranty, it doesn't matter.

  6. #6
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    66,758
    Quote Originally Posted by RDP View Post
    Why not put back what goes back...........when posible.
    He's trying to save the customer money.
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  7. #7
    Join Date
    Jun 2008
    Location
    South,Tx
    Posts
    331

    Scrolls Vs Reci

    especially on a loss of charge situation where the unit goes into a vacuum for a long period of time, or should I say for a scroll, a short time before death!

    what is a long peroid of time ? 5 minutes or 3 days
    Matt 7:12 The Golden Rule
    "Do for others what you would like them to do for you. This summary of all is taught in the law and the prophets.

  8. #8
    Join Date
    Mar 2005
    Location
    burlington county n.j.
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    9,641
    Quote Originally Posted by beenthere View Post
    He's trying to save the customer money.

    sorry, i won't give myself problems to save them money.

    something happens down the road its one of those things that can come back to bite you in the @ss.

  9. #9
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,758
    I don't recommend for or against it.

    If in an emergency, I can't get a scroll or recip of the right size. I'll use the other.
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  10. #10
    Join Date
    Jun 2008
    Location
    va
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    800
    Quote Originally Posted by derbysr View Post
    especially on a loss of charge situation where the unit goes into a vacuum for a long period of time, or should I say for a scroll, a short time before death!

    what is a long peroid of time ? 5 minutes or 3 days
    Anytime in a vacuum is too long, but in most cases, one doesn't no how long a system ran like that. I've had many on a heat pump that were bad, no-one knowing untill the unit was switched over to cooling, then noticed no cooling. Turns out, the aux heat did the heating, as well as the unusually high electric bill from winter......Some compressors had already failed and tripped breakers, some were still running, but were full of the green slime.

  11. #11
    Join Date
    Jun 2008
    Location
    va
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    800
    Quote Originally Posted by beenthere View Post
    Depends what size compressor.

    Are you matching the compressor up for performance, or just putting the same BTU size in.
    You should match them for performance.
    I'll match them up BTU wise, as close as possible. AS far as performance, after charging, the pressures are very close or at it according to the units chart or specs. Worse case, it might knock the SEER rating down a point or so, but at that point, the customer just wants it fixed.

  12. #12
    Join Date
    Jun 2008
    Location
    va
    Posts
    800
    Quote Originally Posted by t527ed View Post
    sorry, i won't give myself problems to save them money.

    something happens down the road its one of those things that can come back to bite you in the @ss.
    How can it give problems? If the replacement is installed properly and pressures are within factory specs, how can it get you? I've had no problems yet.

  13. #13
    Join Date
    Jan 2004
    Location
    Lancaster PA
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    66,758
    On A/Cs under 3.5 ton. A recip that is rated 2000 to 4000 BTU less then the scroll will provide the same BTUs as the scroll did.

    Next time you do one.
    Also check the amp draw compared to a scroll of the same BTU rating.
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