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

Barnhill Automotive


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 have taking my vehicle here for about a year and a half. I love this place because I get great, honest, fair service. Mr Tommy( the owner), never tries to over sell me, but always informs me of what is a priority to keep Harriet (my CR-V) running smoothly. Also, Ryan does exceptional work! He takes his time with each vehicle. You can tell he takes pride in what he does. As a bonus, Mr Tommy always has a funny story to share ?

, 09/11/2021

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Excellent service! Always professional. Always timely. Always honest. Always fair. The most reliable mechanics I've ever met!

, 05/16/2021

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I am very pleased with the thoroughness of the service checks and information provided from Barnhill Automotive on things needed to keep my cars in top operating condition! I've had them service all of my Hondas and have recommended friends and family!

, 11/26/2020

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