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
  • reviewiconFriendly Staff
    Brakes, near Chattanooga, Tennessee
    , 02/05/2020

    Great service at a reasonable price! Randy and the team are straightforward, do not cut any corners nor do they create non-existent problems to get more money from you. I have only had positive experiences at this Maxi location and with Randy. I highly recommend this service center!

  • reviewiconFriendly Staff
    Brakes, near Chattanooga, Tennessee
    , 01/21/2020

    Been taking our vehicles there for a few years now. Fair pricing, good communication, and they stand behind their work.

Chattanooga
  • reviewiconBest Auto Repair
    Electronic Services, near Chattanooga, Tennessee
    , 08/08/2019

    Great service. Did better job diagnosing problem than the dealership and fixed it for a whole lot less than what the dealership quoted. Spent the time needed to actually find what the problem was and not just swap parts until it was fixed. They were genuinely concerned about finding the issue. Allowed us to drive the car for the weekend to ensure the problem was fixed before we made the final payment. Highly recommend and will use them again.

  • reviewiconBest Auto Repair
    Electronic Services, near Chattanooga, Tennessee
    , 11/20/2019

    I went in needing 4 new tires, and that is exactly what I got. No one tried to sell me something I didn't need and the manager made time for me to educate me. I never knew tires that only have 18,000 miles on them could be "dry rotted" but they were. You can't ask for better service. I was treated with respect, paid what I was quoted, and my repairs were done on time. (You can't ask that from a dealership!) I will be loyal to this Red Bank location as long as I live here.

Chattanooga
  • reviewiconLocal Mechanics
    Car & Truck Care, near Chattanooga, Tennessee
    , 03/13/2019

    Fantastic customer service, quick fix, very good prices. I've gotten work done by them multiple times for different stuff and they have done a fantastic job every time. Steven was very friendly and comprehensive with making an appointment, got it in quick and had it out in a very reasonable time. Highly recommend!

  • reviewiconLocal Mechanics
    Car & Truck Care, near Chattanooga, Tennessee
    , 02/05/2020

    Great service at a reasonable price! Randy and the team are straightforward, do not cut any corners nor do they create non-existent problems to get more money from you. I have only had positive experiences at this Maxi location and with Randy. I highly recommend this service center!

Call us for service: 423-877-0987

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