Best Auto Repair, Winston-Salem

CONTACT US
  • 336-724-7463

  • 3500 North Patterson Ave
    Winston-Salem, NC 27105

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

Service Department
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 Closed
  • 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 Whiteheart & Sons Auto Service Center 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.

What People Say About Us

Winston-Salem
  • , 06/06/2023

    Brennan was phenomenal! I needed towing from Winston-Salem to High Point with my 7 year old. Brennan looked at the problem and diagnosed it accurately. Too bad I still needed towing. He was professional, caring, and considerate of my little one. He and his truck was clean! That means a lot. I ran into this company through AAA, but will definitely think of them when I need their service again! Thank you for a great experience during a trying time.

  • , 05/25/2023

    Excellent services provided diagnosing a coolant leak. Thank you for the thorough testing to ensure the issue was fixed. I would recommend Whiteheart to friends and family.

Winston-Salem
  • , 12/28/2022

    Enrique Noyola came out and towed our car to the dealership because the battery was dead. He was so kind and considerate. He did such a great job. We were very impressed by the customer service he provided.

  • , 10/12/2022

    I was coming back from Kentucky and broke down in Rural Hall with my elderly mother in tow. I have AAA and they left me stranded for 3 hours until they finally called Whiteheart to come and get us. And it was only 30 minutes from the time Whiteheart got the call that they were there to help. I was angry with AAA because they did not call this company sooner. Had I known of this company before this night I would have called them directly and skipped AAA. The tow truck driver (sorry I do not remember his name) that came to rescue us was so polite, professional and and helpful. It had started raining and he let us get in the truck while he hooked the car up. He got us down the road and home within an hour, along with some great conversation. I am so appreciative that he came so quickly and got us where we needed to go safely. THANK YOU!!!!

Winston-Salem
  • , 09/26/2022

    William was quick and friendly when he came to tow my vehicle from Winston Salem to Booneville! Awesome service

  • , 09/18/2022

    William is the best, he contacted me to let me know he was on the way and was very accurate with his information. He had me back in my car within minutes of his arrival. Prompt and professional, thank you very much.

Call us for service: 336-724-7463

ASE (Automotive Service Excellence)
Car Care One
AAA (American Automobile Association)
Snap Financing
Best Bet Auto Finish
  • Car Care Aware