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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 GM Exclusive, 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.

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Art serviced my new C8 2022 Corvette yesterday. He has been my guy for all 3 of my Corvettes . He is better then a dealership. Way better. He has all the certifications and continues to update his knowledge to keep up with the changing technology. Do yourself and your pocketbook a favor, and visit GM Executive for all of your GM needs. You will be glad you did. Nobody even comes close to this company. Knowledge care and friendly guaranteed service just like the dealer, but way better. I've used GM Executive now for over 17 years on all 3 of my Corvettes. No way I'm ever going back to a dealership. Your experience will not get any better. He is the best! Regards, Steve Stogner
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Always a great job done by Art and the staff. We have trusted Art and GM Exclusive for over 20 years and never been disappointed with the work.
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