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
  • reviewiconHonest Mechanic
    Electrical Services, near Chattanooga, Tennessee
    , 02/04/2020

    Great work!! Chris was the person that took care of me up at the front desk. He is also the manager, he is a very kind and knowledgeable employee!!

  • reviewiconHonest Mechanic
    Electrical Services, near Chattanooga, Tennessee
    , 08/10/2019

    They do excellent work.totally satisfied, If need to I would most definitely use them again.

Chattanooga
  • reviewiconFast Full Service
    Car & Truck Care, near Chattanooga, Tennessee
    , 11/20/2019

    Great service and did a wonderful job. Very glad to have my truck back up to par

  • reviewiconFast Full Service
    Car & Truck Care, near Chattanooga, Tennessee
    , 11/20/2019

    Did an awsome job !! Went to the maxi first time on red bank and man did they botch the job not to mention over charged me from what after what they initially told me ..I have access to a lift and when i brought my truck back to my shop and lift it up to inspect the work , and what a quality job they did . super happy , paid a little more then what i expected but after i saw the work they did , money well spent . Thanks again guys !

Chattanooga
  • reviewiconBest Local Mechanic
    Undercar Services, near Chattanooga, Tennessee
    , 10/17/2019

    This is a great place for anyone who needs to have work done. I had my sway bar links replaced at the dealership and when I picked the car up, it was making a knocking sound near the wheels/underside of the car. Turns out the dealership didn't tighten my sway bar and also stripped a nut/bolt when they repaired my sway bar links. Maxi offers free inspections and the dealership was trying to charge me again just to have it looked at after they obviously messed something up on the car. I took it to Maxi and explained my situation and they tightened my sway bar free of charge. I highly recommend this shop.

  • reviewiconBest Local Mechanic
    Undercar Services, near Chattanooga, Tennessee
    , 02/04/2020

    Great work!! Chris was the person that took care of me up at the front desk. He is also the manager, he is a very kind and knowledgeable employee!!

Call us for service: 423-892-6159

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