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 - 3:00PM
    Sat Closed
  • Sun Closed
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816-833-1348 | 220 W 23rd St, Independence, 64055

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

Barr's 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 Barr's 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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I find a good mechanic and they know they will work on my car every time it breaks. My previous mechanic had to retire to get rid of me. I really like this place. They have been in business for many years which means people come back, which means they are satisfied. He replaced an alternator for me, for a little less than what he originally quoted. It is warrantied for parts and labor. I picked the kind of alternator that I wanted, he kept me posted along the way. They also did it pretty quickly.

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We have been going to Barrs over a year now and our family has been going there for a few years as well. They are always fair and explain things that need to be done to your car. I feel like we can really trust them and they are always friendly and they actually call you back!

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We have gone to Barr's Auto Repair for over 20 years for service for our vehicles. We have never had any problems with our service. There has never been any work on our cars that wasn't needed done. We have always been told the truth as to what repairs were needed and then done on time.

  • ASE (Automotive Service Excellence)
  • CARQUEST
  • IATN (International Automotive Technicians' Network)
  • Jasper
  • TECH-NET
  • World Pac
  • Car Care Aware
  • Call Us For Service: 816-833-1348