Best Auto Repair Columbia, Chapin, and Columbia

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Columbia

Blythewood

Chapin

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AC DELCO

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 Royson's Automotive, 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

ASSOCIATIONS

  • Car Care Aware

Testimonials

  • reviewicon
    This is the best auto repair shop Rick Ramler and I have ever found. They are extremely fair in pricing and the best in customer service, and most importantly they are very knowledgeable when it comes to diagnostic and repair of your auto.
    , 09/03/2021

  • reviewicon
    Prompt, fair, and friendly. What more could you ask for?
    , 08/25/2021

  • reviewicon
    A nice automotive repair shop. Did brakes for my wife's car today.
    , 07/28/2021

  • reviewicon
    Bobby and Rex will treat you and your vehicle just right. They are honest and fair. You can trust them!
    , 07/20/2021

  • reviewicon
    We had car trouble, had to come off I77 exit in Blythewood. Turned out alternator needed replaced. They were extremely helpful and provided excellent customer service despite being very busy.
    , 07/05/2021

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    I took my wife's car in for an intermittent problem where the brake pedal would go to the floor occasionally. They found the problem in a short time and had the part ordered that day. They kept me informed about the status and gave me what I considered a very good price for the repair. I'll definitely use them again!
    , 07/02/2021