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

Working Hours
  • Mon 7:30AM - 5:30PM
    Tue 7:30AM - 5:30PM
  • Wed 7:30AM - 5:30PM
    Thu 7:30AM - 5:30PM
  • Fri 7:30AM - 5:30PM
    Sat Family Time
  • Sun Family Time

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 AutoVaun, 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.

What People Say About Us

Mesa
  • , 08/14/2023

    Customer service with Mathew was amazing, he was super informative and kept me up to date on everything as well as made sure that my needs were met if I ever had any special request. I always felt informed and cared for and was very impressed overall, pretty much the ideal customer service I would want to have.

  • , 10/21/2021

    New customer who had an awesome experience. I took my car in for an oil change and some front end work. Richard got me in quickly and got all the service done the same day. He followed up with me the next day on some additional work I wanted to have priced. Great service and communication. So glad I found a place that I can trust that is close to my house, with great rates.

  • , 07/03/2020

    New customer needing transmission service. Quickly schedulled us and fixed our problem at a more than fair cost. thanks, we will be back the next time we have a car problem.

  • Honest efficient and straight forward, they were willing to walk me through the work needed and answered all my questions.

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    We have been going to Autovaun for years, they are outstanding. They are not a discount service center so do not expect to save money over a dealership, but they are truly honest, there have been many times where a dealer told me one thing, with multiple items needing to be replaced and at a huge expense and autovaun found and repaired the actual single broken part. We have never had an issue with any work done and all the repairs have lasted us.

  • reviewicon

    They filled my AC with freon and put in a dye that would let them know where the leak was. Since it was leaking I had them fix the ac. While there they noted my check engine light was on, explained to me it was most likely the catalytic converter and called the dealer finding out it was still under warranty. He told me to have them run a diagnostic. Sure enough, the catalytic converter needed to be replaced and everything was covered. I really appreciate Autovaun for going above and beyond to help me out like that.

Call us for service: 480-807-6555

ASE (Automotive Service Excellence)
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