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

Working Hours
  • Mon 8:00AM - 5:30PM
    Tue 8:00AM - 5:30PM
  • Wed 8:00AM - 5:30PM
    Thu 8:00AM - 5:30PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • 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 Scenic City 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 People Say About Us

  • reviewicon

    I pulled in on a Friday at 4:00pm with my car over heating. These guys were so kind, fixed me up and got me on my way. I was far from home and so appreciated their efforts. Highly recommend!!!

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    These guys saved me 3000 bucks. Not kidding. Dealership estimate was 4300. Allan and his guys got the work done for way cheaper and in about 24 hrs. They're honest and friendly. Stop paying the dealership. Go see these dudes.

  • reviewicon

    These guys really know their way around cars! They will get my business every time! Great people too!

  • reviewicon

    I have a 2001 prius. Its old but a great car. Scenic City knows what they are doing with it and always make sure that all of it is running correctly. They fix its loud roar for only about $350 as it was a wheel issue. Every dealership i went to said i had a bad cat. Converter which is a 2000 dollar repair. They found out it was fine. Now my car runs like its new. I would highly recommend them especially to hybrid owners!

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    We had a van break down en route to Florida. Alan saved the day! They looked at it right away, were clear about what they could find and what they might find and got us back on the road the same day. Very professional. Very honest.

  • reviewicon

    I pulled in on a Friday at 4:00pm with my car over heating. These guys were so kind, fixed me up and got me on my way. I was far from home and so appreciated their efforts. Highly recommend!!!

Call us for service: 423-622-4213

ACDelco
ASE (Automotive Service Excellence)
IDENTIFIX
BBB Accredited Business
  • Car Care Aware