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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 Calhoun's Automotive 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.


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OUR REVIEWS

 (8 Reviews)
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reviewiconTransmission Services, near Warner Robins, Georgia

This is my second time using Calhoun Auto Repair. Again, they have set the bar and standards for repairs and customer service. My Infinity was diagnosed with transmission issues and instead of doing a fixed just to get it back on the road, I ended up with a new transmission and added additional life to my vehicle versus the same problem in the future. They were very detailed and patient to ensure everything was good just as my vehicle belonged to them. My hats off to all the staff and mechanics at Calhoun Auto Repair Shop. If you want the job done right, take your vehicle to Calhoun Auto Repair

, 04/22/2024

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