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 Barnhill Automotive, 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


Reviews

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I've been going to Tommy since I bought my first Honda Odyssey minivan. I later bought my wife a CRV and all 3 of my children Honda's. I've trusted him to keep their cars safe traveling back and forth from high school through college. Tommy and Ryan keeps me up to date on scheduled maintenance and tells me details on the health of my vehicle. He's upfront on all of the costs. He's very friendly and personable. If there were more people in the world like Tommy, the world would be a better place.

, 06/25/2022

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We have been taking our Hondas to Barnhill Automotive for many years,15 Years. Tommy and Ryan do an excellent job. They are thorough and reasonable with all of their work. I will only drive Hondas because of the peace of mind that I have with the top notch service at Barnhill Automotive. I would highly recommend this business.

, 06/22/2022

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After purchasing a used Honda for my teen daughter, I wanted to have it checked out and was referred to Barnhill Automotive by Honda of Columbia due to the age of the vehicle. Tommy answered my call and was very friendly, open and honest. I appreciate how thorough and detailed he was when explaining what was found in the inspection. They care about their customers and the cars they service. Thank you for a wonderful experience.

, 05/17/2022

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