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    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat 8:00AM - 1:00PM
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865-272-3379 | 106 Melton Lake Dr, Oak Ridge, 37830

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

Peoples Choice Auto Repair

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 Peoples Choice Auto Repair, 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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Fast and affordable.

, 05/31/2022

Had a brake booster installed in my 1999 Chrysler lhs, superb job, outstanding customer service.

, 05/03/2022

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This place is AWESOME...so friendly, reasonable and very willing to explain. Thanks I'll be back.

, 02/18/2022

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I brought my vehicle in for diagnostic service. They were incredibly quick, friendly and professional. Jessica made sure I knew what all charges were for and explained what each repair meant in the overall health of my car. Straight shooters! All of my vehicles go to People's from now on!

, 01/26/2022

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Honest, efficient and prompt. I?m very happy with end product. Thank you!

, 12/08/2021

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Wonderful experience here. I'm currently making this post on A Saturday. I originally called on a Monday for a 3 hour job and was told that the next appointment wasn't until the next week on Tuesday. But due to hard work I was able to get in two days later on Thursday to get my car back on the road. I would've still been waiting 3 more days to make money so that's awesome. And the mechanic was very informative on future work I need to get done and with his advice and helping my gear shift which was not included in the job I was able to drive my car back 380 miles home with a near blown transmission. Five star for sure.

, 11/14/2021

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  • Call Us For Service: 865-272-3379