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 Accu Auto Care LLC, 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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Accu Auto Care is an excellent choice for getting your vehicle repaired. I brought my vehicle in for an engine light issue and got it back the next day. They are honest people and won't overcharge you for repairs like some other places. Overall, I recommend this place. quotes-image
, 04/05/2024
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Coming in on short notice, to have new tire put on and car aligned. Without hesitation, Eugene took my car in for the areas needing attention. Finished promptly, and am greatly, as always, SATISFIED with ALL ASPECTS OF SERVICE PROVIDED. I HIGHLY RECOMMEND ACCU AUTOMOTIVE FOR 6ALL YOUR AUTO NEEDS. THANKS AGAIN, EUGENE GOD'S BLESSINGSquotes-image
, 03/12/2024
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