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    • Mon 7:30AM - 5:00PM
    • Tue 7:30AM - 5:00PM
    • Wed 7:30AM - 5:00PM
    • Thu 7:30AM - 5:00PM
    • Fri 7:30AM - 5:00PM
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  • Ramsower's Automotive LLC
    3138 N Dodge Blvd
    Tucson, AZ 85716
520-326-7224
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Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

Your car or truck's AC system is under extreme pressure and the thermal expansion valve or orifice tube monitors the amount of pressure and the temperature of your A/C system. It calculates the precise amount of refrigerant that can safely go into the evaporator. A failing expansion valve or orifice tube often causes a vehicle's air conditioner to blow hot air.

Replace or Repair

  • Expansion Valves: Too much refrigerant causes your evaporator to get too cold whereas too little refrigerant would result in inadequate cooling. The expansion valve is a complex valve that regulates refrigerant flow. This process of metering the refrigerant adjusts the flow according to the temperature of the refrigerant in the evaporator coil. Talk to one of the pro mechanics at Ramsower's Automotive LLC, as this part can be replaced on its own and does not require the entire replacement of the AC assembly.
  • Orifice Tubes: Unlike the expansion valve, the orifice tube is a simple fixed device with no moving parts. It therefore cannot vary the flow of refrigerant into the evaporator, but rather causes a permanent restriction in the system. However, like the expansion valve the orifice tube regulates refrigerant flow through the system and filters debris which may come through in its screen. Often fixing a "bad orifice tube" requires replacing the entire evaporator assembly.

TESTIMONIALS

Had a problem with my older Dodge van had bought the part but 3 different mobile mechanics failed to show up so having lived in the area of Ramsowers for years I stopped in they put the part on for me the same day with no appointment just to help me out their price was fair job was done right. He also was clear that it may not solve my problem because they didn't diagnose the van but would do what I wanted then told me if the problem continued they would help figure it out. I have not had this good of experience in any service in a long time. I would recommend them to anyone needing a good garage!

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Ramsower's Automotive LLC

  • 3138 N Dodge Blvd
    Tucson, AZ 85716
520-326-7224