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 Landmark Auto Group, 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

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Excellent service, ranging from fixing the ac system on my truck, to identifying the underlying cause of why it was broken in the first place. I prefer to take my business to landmark auto group, due in part to their mechanical skill, but also their hospitality and customer service. When you call in you’re likely to speak with max the owner, while providing you solutions and estimates for your vehicle he is a joy to speak with.

, 08/26/2024

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Very professional, good rate, and excellent with European cars!

, 06/21/2024

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Good guys busy shop though I had repair done and my actual price was lower than the quote

, 01/15/2024

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