For the protection of our customers and employees, we are following all COVID-19 CDC guidelines, in addition to wearing masks, and utilizing wheel, seat and gear shift covers. At Maxi Auto Service Centers, our goal is to ensure your health and safety.

Best Auto Repair, Chattanooga

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

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 - 3:00PM
  • Sun Closed

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 Maxi Auto Service, 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 People Say About Us

Chattanooga
  • reviewiconLocal Mechanics
    Car & Truck Care, near Chattanooga, Tennessee
    , 02/04/2020

    This is a great place to get your car work done. Everyone is extremely nice and they have great service! I called last minute for a muffler delete on my Ford Focus and they got me in the same day even though it was not long before closing. I'd definitely recommend them and would go there again!

  • reviewiconLocal Mechanics
    Car & Truck Care, near Chattanooga, Tennessee
    , 03/20/2019

    I was traveling, had an issue with my muffler and they helped me out. Courteous, friendly staff. I would highly recommend this shop for all your muffler issues.

Chattanooga
  • reviewiconHighly Recommended
    Car & Truck Care, near Chattanooga, Tennessee
    , 08/20/2019

    This place is great! Carl was fabulous!! Very professional and straight up which as a female I greatly appreciated. Would definitely recommend. Calls and keeps you informed before doing anything.

  • reviewiconHighly Recommended
    Car & Truck Care, near Chattanooga, Tennessee
    , 11/14/2019

    Brought my car in to have my exhaust replaced. Carl got me in and out in an hour and a half. Fair price and friendly service. Good to find mechanics you feel like you can trust!

Chattanooga
  • reviewiconAmazing Service
    Brakes, near Chattanooga, Tennessee
    , 09/20/2019

    I dropped off my car to Carl to work on my brakes and rotors. I have a Saab and have tried several different places but I've had no luck with getting the right parts. Carl was able to get the parts for me and put them in at a decent time. Excellent service.

  • reviewiconAmazing Service
    Brakes, near Chattanooga, Tennessee
    , 02/04/2020

    This is a great place to get your car work done. Everyone is extremely nice and they have great service! I called last minute for a muffler delete on my Ford Focus and they got me in the same day even though it was not long before closing. I'd definitely recommend them and would go there again!

Call us for service: 423-894-9604

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