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 - 2:00PM
  • Sun Closed
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815-271-6500 | 907 West Rand Rd (Rt 120), Lakemoor, 60051

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

State Road Auto Repair

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 State Road Auto Repair, 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

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These guys are great!! They were able to get my car in and were fast doing the repairs. They took the time and showed me what they were going to do to my car and not try to say "you need this and that and yada, yada, yada". Then to top it off my car ended up being cheaper than the original final estimate, which I was thrilled with. If my regular mechanic can't fix my car I will definitely come here again.

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Came in on a Saturday to fix a rusted 02 sensor so I could pass my emissions test. Fixed the problem same day and for a very reasonable price. Awesome staff and talented mechanics!

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Great service and the owner Dominic is very knowledgeable and on the premise. They don't RIP off customers like some shops do.

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Great service will not find a better more friendlier fair repair shop in this corrupt state. Fair price honest great work it's almost unbelievable to have a great place like State Road!!

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We own 5 cars and take all of them in for various repairs and/or general maintenance. Every time we are there they are helpful and do a great job. The mechanics have been there forever, and are always helpful. I love that they are a family owned business! I would recommend them for sure!

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Amazing customer service! Everyone I talked with was very kind/patient and willing to help however needed. I will definitely be going back if I need any repairs!

  • ACDelco
  • ASE (Automotive Service Excellence)
  • NAPA
  • BTB - IPS
  • Car Care Aware
  • Call Us For Service: 815-271-6500