Best Auto Repair, Matthews

475 Stallings Rd Matthews
NC 28104

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A & B Automotive Inc.

 (73 Reviews)

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 A & B Automotive Inc., 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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Great body shop! Took my 3rd Gen 4runner for a fuel injector change and my car is running wonderful now. So glad to have this shop so close to home. I will be back for any future needs.

, 03/27/2024

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Trustworthy shop with good service and fair pricing. I've brought a few vehicles here for inspection and service and will continue coming back.

, 03/22/2024

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I feel heard and everything is explained well. The lady at the front desk is always so welcoming, she takes thorough notes and calls you if there’s anything that needs to be addressed before repairs are made. I’ve never felt taken advantage of and I’ve never felt that I’ve been over charged. I’m so glad I found this place!

, 02/28/2024

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