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 Garner Auto Specialists, 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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What our clients are saying about us

We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!

This place had responsive employees that actually made eye contact when they spoke to you. They were fast and gave me an honest diagnostic. I was very pleased with them. If I lived in the area I would use them again! quotes-image
, 10/03/2024
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A HUGE SHOUTOUT TO SERVICE ADVISOR , MR.SAM AND HIS SERVICE TECHS FOR DOING SUCH AN ACCURATE AND THOROUGH JOB IN DIAGNOSING AND FIXING MY OLDER MODEL FORD!! My car needed extensive repairs and under Mr. Sam's supervision the work on my vehicle was thoroughly completed to my satisfaction and definitely quicker than I thought it would be ! My car is running well and everything that was in the service agreement to be done was completed. I appreciate Mr. Sam's honesty , integrity and professionalism in making sure I was a completely satisfied customer !! The staff at Garner Auto are courteous, friendly and provided great customer service ! To Mr Sam and techs : THANKS FOR A JOB WELL DONE !!quotes-image
, 09/13/2024
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