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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 Supreme Automotive Service & 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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We needed our car looked at on short notice and got us in without any wait. They took our number can called us back within two hours with the repair completed for a fair price. They explain in detail of the fault and had the vehicle ready for pickup on the same day. They were kind and straightforward with expectations.

My car broke down three miles away from the shop a few days before Christmas. I put my trust in supreme auto and they got me all the way together. They towed my car to the shop and diagnosed the issues. I was a little on edge at first but they promised to do a good job at a fair price. They did I had an Lyft drop me and my family off at the shop. We drove away with no issues . I would recommend Still do your own research.

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