Working Hours
  • Mon 8:00AM - 5:00PM
    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • Sun Closed
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704-201-7334 | 100 Center Ln, Huntersville, 28078

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

Auto Specialties of Lake Norman

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 Auto Specialties of Lake Norman, 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

reviewiconFamily Vehicles
North Charlotte, NC

Bert & associates are awesome. I started servicing my BMW couple years back. They are now my default repair shop for all family vehicles. When service is required, it's expertly provided. Perhaps more important, when work is unnecessary or minimally resolved, they explain why, to quickly get me back on road. I always leave the shop feeling work is thorough with safety in mind. Clean shop, clear talk, trustworthy service...all at a fair price.

, 09/22/2020
I came in to get a car inspection and I was able to be seen immediately! Bert even gave me a great deal on the inspection since it was my first time. I will be back for all of my car needs!

, 08/28/2020

reviewiconHighly Recommended, Honest Business
Heating and Cooling Services, near Concord, NC

I was referred here by another mechanic to help out with my A/C. I told the owner, Bert Jones that I was getting rid of my car in the fall and did not want to spend a lot of money. I only wanted the A/C charged and a sealant put in hoping it would last the summer. I was very impressed that my wishes were respected and no one tried to sell me on a higher priced repair. Everyone was very friendly and I was very happy! About 6 weeks later I noticed that the A/C was not as cold and wanted to get it back in for another recharge. I had an opportunity to speak to Bert for a few minutes and he was awesome! I even left there with a no charge for the recharge! This is an honest business and I would highly highly recommend!

, 07/27/2020
Had a difficult electrical issue with my car, took it by auto specialists and they had it fixed the same day. Great mechanic shop.

, 05/07/2020
I was in Lowes Hardware the other day when I ran into a guy with an Auto Specialties t-shirt. Not wanting to waste his time I asked the gentleman if he had a few minutes to spare. Within a few minutes of speaking with him I was convinced he had a wealth of knowledge about my truck. On Monday I decided to take off work and drove down to Huntersville to see if he could help me with my truck. Within a few hours he called me and said my truck was fixed. I'm not big on reviews but I feel my experience was so good I needed to tell more people about this hidden gem.

, 05/07/2020

reviewicon

Great facility, great customer service. Have taken my cars here for the past few years. Clean shop with friendly staff. Have gone to a few different places for auto inspection in the past, this place is where I am staying. Thank you gentlemen

  • ASE (Automotive Service Excellence)
  • Jasper
  • IATN (International Automotive Technicians' Network)
  • NAPA
  • Bosch Service
  • Car Care Aware
  • Call Us For Service: 704-201-7334