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 8:00AM - 1:00PM
  • Sun Closed
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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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Jessica. The new office manager is professional and makes sure the job is done right at a fair price. The mechanics are super good

, 09/22/2021

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Thousands of miles from home the dreaded check engine light came on. We took our Honda to them. They got us right in and identified the problem, got it repaired and we were on our way. About 8 miles down the road the check engine light came back on. Back we went. Seems that Hondas are particular beasts and don't work with after market parts. They stood behind their work, replaced the parts with OEM parts at no cost. Good honest hard working folks. If your car breaks down around Oak Ridge, take it to People's Choice.

, 08/22/2021

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Blazer 2004, bought new, only owner. My car had all kinds of little problems here & there. Took it in to have it "gone over". Left it a week while on vac. They went through everything. Got it back and couldn't be happier. Runs awsome, like new. Jerry Hunter was my mechanic, great guy! Staff was also great & professional. Cost me a bit, but well worth not having to l?k for a new car with a new car payment. ???

, 08/21/2021

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Had my breaks, rotors and a fuel pump sensor replaced. The work took a little longer then planed but I had it back the next day. However, I still had issues. When I called with my concerns I was in Knoxville already, having drove straight there after getting my car. Jessica listened to my concerns, made arrangements immediately to have it towed and within a few hours they had resolved the issue. I trust the mechanics there, and simple mistakes like tightening the drums too tight happens. But for me, someone who is not mechanically inclined and smells burning rubber it is an anxiety moment. But the staff handled it well, the tow company was professional and fast. I have no problems with bringing my car back again or referring other to them.

, 08/10/2021

Highly recommend People's Choice for your car repairs. Very knowledgeable staff. Everything was explained in detail. My car was a nightmare for them. One problem led to another. I was kept up to date with everything that was going on with the repairs. They did a lot of work from timing assembly replacement to engine replacement, starter replacement and now sway bar link. My car is great. I'm enjoying driving it again. Can't say enough about People's Choice great staff and the crucial part each one plays in their team. Thanks so much! I will be doing business with them again. They have also worked on both of my daughter's cars with great results. I will be recommending them to anyone that has car issues.

, 07/09/2021

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Peoples Choice saved the day. After waiting half the day for another shop to fix the brakes on my Mother-in-law's car, we found out they hadn't even touched it yet, even though we had an appointment. We called People Choice, explained the situation, and and they assured us they had the parts in stock and could fit us in immediately. They had her back on the road in no time. (Review from March 2021)

, 06/16/2021

  • ASE (Automotive Service Excellence)
  • NAPA
  • ASE Master Technician
  • BBB Accredited Business
  • Car Care Aware
  • Call Us For Service: 865-272-3379