Working Hours
  • Mon 7:30AM - 5:00PM
    Tue 7:30AM - 5:00PM
  • Wed 7:30AM - 5:00PM
    Thu 7:30AM - 5:00PM
  • Fri 7:30AM - 5:00PM
    Sat 7:00AM - 12:00PM
  • Sun Closed
    Part Store Hours: M-F 7-5; Sat 7-1
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731-658-2711 | 15160 Highway 64 East, Bolivar, 38008

Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

Gay's Auto Parts & Service

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 Gay's Auto Parts & Service, 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.

More AC Repair Services:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services


What Our Customers Are Saying

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5 stars.

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Good!

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5 stars!

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Usually has everything you need for automotive or it will be there in morning.

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Very knowledgeable staff. This place is great. Not only can you get parts and tools pretty much the same stuff as big chain parts store have, but they deal in specialty parts as well. If you can't get it at big box stores they've got it, or can get it here. I had my Kubota tractor motor head resurfaced here. Great place.

  • ASE (Automotive Service Excellence)
  • World Pac
  • Car Care Aware
  • Call Us For Service: 731-658-2711