Working Hours
  • Mon 8:00AM - 5:00PM
    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • Sun Closed
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520-625-1500 | 171 W Continental Rd #115, Green Valley, 85622

Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

Mr. Automotive

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 Mr. Automotive, 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.

More AC Repair Services:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services


What Our Customers Are Saying

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This place is under new management. The customer service is impeccable, and the results are incredible. I will recommend this place to anyone I hear having any kind of car problem. They diagnose your car, they do not add on any unnecessary services, and they fix your car in a timely matter. Reliable and trust worthy.

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Superb service, and this place really stands behind its repairs. Had constant trouble with my A/C, and they solved it once and for all. This outfit gets my highest recommendation with prices that cannot be beat for the quality of the work performed!!!

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I have all the confidence in this shop's ability. While there, I have actually seen them offer customers cost-effective alternatives. Honorable, talented, dependable business folks. I am proud to call Mr. Automotive MY mechanic shop.

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I have used their service for several years now and have always had the most professional courteous service. If there is a problem they go out of their way to correct it for little or nothing. They are very honest and you can depend on them.

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Outstanding integrity and professionalism. I had not experienced this kind of integrity in a long time. My car problem was mice eating the electrical wires which required finding the breaks and resetting the codes. No surprise charges.

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Very helpful, professional service. Diagnosed and fixed the problem quickly and efficiently. I would highly recommend.

  • ASE (Automotive Service Excellence)
  • Green Valley Chamber of Commerce
  • Car Care Aware
  • Call Us For Service: 520-625-1500