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  • 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 Appointment Only
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912-335-5766 | 13 Ida J Gadsden Dr, Savannah, 31408

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 CARma Auto Care, 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

There are no MINI COOPER dealers in the Savannah area. Although I had taken my Mini in for service to a local BMW dealer, they did not diagnose that my starter was faulty (interrogating the key is not enough). CARma did a full diagnostic and also identified that, in a dictionary to my starter, I also needed new battery! I highly recommend this auto repair shop. I left feeling completely confident any issues with my MINI are resolved! Staff was friendly and kept me informed. Great job, team!

, 03/17/2022

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Carma is a great Auto Car repair center. We send several cars over for maintenance and they not only fix the problem, but perform a multi point inspection on the health of the vehicle to let us know if something else is wrong. We entrust them with our student training vehicles and they have never let us down. They provide the best service. Thank you Carma team for taking great care of us!

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CARma is very professional I was not expecting such great customer service and was extremely pleased with how fast my car was attended to. Michelle and Steve were very friendly. I highly recommend this place, they go above and beyond.

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Had an unexplained issue with Jeep engine shutting down after putting transmission in Drive. It seemed like an engine / transmission-related problem. The folks at Carma analyzed the situation and identified a vacuum hose that had dried-out and was causing the problem. Quick fix at reasonable cost. They are now my go-to service shop.



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Wonderful service. great honest company. we were stranded while traveling and they helped us in every way they possibly could. we couldn't be more pleased with the service we were offered and are grateful for their help



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I took advantage of a headlight-restore special yesterday. I had prompt, friendly service and my headlights are fantastic! The technicians also showed me some ways to save money on future car repairs. Thank you Carma Auto!



  • ASE (Automotive Service Excellence)
  • Automotive Training Institute
  • Car Care Aware
  • Call Us For Service: 912-335-5766