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Evaporator Coil Orifices

An orifice (also referred to as a piston or flowrater) is installed in an evaporator coil when the coil is a different tonnage rating than the condenser or heat pump tonnage rating. Installation takes about 5 minutes, and consists of replacing orifice already inside coil. We have an online picture step-by-step guide which shows how to do this. If you are installing a new evaporator coil and can not find manufacturer-specific information for your outdoor air conditioner or heat pump, use this chart as a reference to ensure a properly sized orifice is installed in your system.  
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  • Danfoss Orifice #51

    1.5 Ton Orifice Kit for R-410A, 14 SEER Air Conditioner

    $5.99
    In Stock
    (4 Reviews)
  • Danfoss Orifice #59

    13 SEER Orifice Kit - 2 Ton R-22 Units, 2.5 Ton R-410A Units

    $5.99
    In Stock
    (4 Reviews)
  • Danfoss Orifice #61

    13 SEER Orifice Kit - 2 Ton R-22 Units, 2.5 Ton R-410A Units

    Best Seller
    $5.99
    Pre-order
    (0 Reviews)
  • Danfoss Orifice #68

    13 SEER Orifice Kit - 2.5 Ton R-22 Units, 3 Ton R-410A Units

    $5.99
    In Stock
    (4 Reviews)
  • Danfoss Orifice #78

    13 SEER Orifice Kit - 3.5 Ton R-22 Units, 3.5 Ton R-410A Units

    $5.99
    In Stock
    (4 Reviews)
  • Danfoss Orifice #79

    14 SEER Orifice Kit - 4 Ton R-410A Units

    $5.99
    Not In Stock
    (4 Reviews)
  • Danfoss Orifice #80

    13 SEER Orifice Kit - 3.5 Ton R-22 Units, 4 Ton R-410A Units

    $5.99
    In Stock
    (4 Reviews)
  • Danfoss Orifice #82

    13 SEER Orifice Kit - 4 Ton R-22 Units

    $5.99
    Not In Stock
    (4 Reviews)
  • Danfoss Orifice #88

    5 Ton Orifice Kit for R-410A, 14 SEER Air Conditioner

    $5.99
    In Stock
    (4 Reviews)
  • Danfoss Orifice #90

    13 SEER Orifice Kit - 5 Ton R-22 Units, 5 Ton R-410A Units

    Best Seller
    $5.99
    Not In Stock
    (4 Reviews)
  • Goodman B1789857

    2 Ton Orifice Kit for R-410A, 14 SEER Air Conditioner

    $5.99
    Not In Stock
    (4 Reviews)
  • Goodman B1789878

    Piston Kit - .078

    Best Seller
    $5.99
    In Stock
    (0 Reviews)