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 H&L 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.


Reviews

H&L Automotive has been great. Honest and reliable mechanics. Really good customer service! I highly recommend this repair shop. They are good people

Mike is an absolutely awesome mechanic! Went to another shop that wanted to remove the dash to fix the problem for big $$$. Mike was able to diagnose and repair the issue without it costing a fortune to fix. Professional, personable, and customer satisfaction is the best way to describe H&L automotive.

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Car & Truck Care, near Allison Park, PA

Mike was prompt and professional. Explained other things with my car that were an issue and options thoroughly. I will definitely go back!

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