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

Working Hours
  • Mon 7:30AM - 5:30PM
    Tue 7:30AM - 5:30PM
  • Wed 7:30AM - 5:30PM
    Thu 7:30AM - 5:30PM
  • Fri 7:30AM - 5:30PM
    Sat 8:00AM - 4:00PM
  • Sun Closed

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 Merle's Automotive Supply, 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 People Say About Us

Tucson
  • reviewiconTucson, Arizona
    , 11/01/2020

    Merle's has been an integral part of our business from day one. Parts, supplies, even shop equipment and lifts. They understand the high level of service that repair shops need, and meet or exceed it on a daily basis.

  • reviewiconTucson, Arizona
    , 11/04/2020

    Merle's has provided stellar service for decades in Tucson and the surrounding communities. The parts counter staff is very knowledgeable and will go above and beyond the call of duty. Mele's has always provided us with top quality parts, equipment and equipment repair / maintenance. We are honored to have Merle's as a part of our family.

Tucson
  • reviewiconEngine & Transmission, near Tucson, Arizona
    , 10/22/2020

    Merle's has been our #1 supplier for 20 years and counting. They're professional and knowledgeable and understand what the word 'service' is all about. They're more than just a supplier, they're part of our business model and part of our family.

  • reviewiconEngine & Transmission, near Tucson, Arizona
    , 11/01/2020

    Merle's has been an integral part of our business from day one. Parts, supplies, even shop equipment and lifts. They understand the high level of service that repair shops need, and meet or exceed it on a daily basis.

Call us for service: 520-889-7202

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