Best Auto Repair Columbia, Chapin, and Columbia

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Columbia

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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
    So pleasant and prompt! Even my 17-year-old noticed their demeanor was great. I definitely appreciate professionalism.
    , 01/20/2022

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    Royson's is the best automotive repair in the entire Chapin area! They are probably the most honest and reliable mechanics I have ever dealt with! I highly recommend going to Royson's before you go anywhere else. If a repair is going to be expensive, they will be up front and honest about it and will even recommend possible cheaper work arounds. They are the most honest mechanics around!
    , 01/02/2022

  • reviewicon
    Great service and experience. Friendly, competent employees and convenient shuttle service. Reasonably priced, and my Mustang is running noticeably better!
    , 01/02/2022

  • reviewicon
    Royson's Automotive of Chapin was an excellent first time experience. I dropped my truck off over night, listing every concern, and the excellent staff at Royson's were very careful to look over every detail and perform everything I had asked for. Thorough, very honest and reliable. Thank you!
    , 12/22/2021

  • reviewicon
    Found my Chevy Astro cargo van years ago at a shady looking car lot up near Lake Murray but before I bought it I paid K&A to go over it in detail. I followed their advice. I did certain repairs and maintenance they recommended and it all turned out great for years. This year they replaced the whole ac system, front and rear struts and other things old age required. They have treated me fairly in price, prompt service and no hollow promises before they have checked it out. I would recommend them to anyone.
    , 12/19/2021

  • reviewicon
    I have to eat crow I was mad that I thought price was to high I was wrong I use to be a mechanic and I was thinking old Labor prices have gonee care p up. Staff is great!! In fact this is the second ti me I've been back. You can trust the folks at Raysons they'll take good care of you!!!!!
    , 12/10/2021