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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507-451-8678 | 505 W North Street, Owatonna, 55060

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

Ron's Repair Service

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 Ron's Repair Service, 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 called because one tire was low - after sliding into a ditch and being able to drive out - This was a Friday around 4:15. Will allowed me to come in, filled the tire, removed a piece of trim that had come loose during my excursion into the ditch, sprayed out the rest of the snow in the tire-which stopped the steering wheel from shaking. This was all done in a short period of time and I was able to finish my trip to Minneapolis. I wish I lived closer to this shop! I was thrilled with the service!

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Ron's Repair has always been dependable and has treated me so great. There is no other place I would take my vehicle.

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Friends recommended so I took our car for a oil change and tire rotation. They did a good job! Bonus is the beautiful Irish setters!

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Ron's has always been fair and honest, they do a great job. It's the only place I trust taking my car to.

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I have driven my car back to the dealership where I bought the car from for years which was over an hour away because I never felt I received the honest and straightforward auto service I deserved in Owatonna. Out of a real sense of urgency I gave Ron's Repair a try and I can't tell you how pleased I have been with the customer service as well as the auto repairs, maintenance and straight answers about what I really need to take care and what can wait. I highly recommend you give Ron's a chance to take care of your auto repairs needs they won't disappoint.

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I was quite impressed with my first experience with Rons repair. My car just came out of warranty and I was having some issues with my A/C. Rons was able to get my car in right away and had it fixed that same day, but what really made them stand out is I had a cabin air filter in my backseat that I was going to install at some point and when I picked up my car they had informed me that they went ahead and installed that filter for me. I was not expecting that, saved me the hassle of doing it and it compelled me to give them a great review. All my service work will from now on be going to Rons!!

  • ASE (Automotive Service Excellence)
  • IDENTIFIX
  • IATN (International Automotive Technicians' Network)
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  • Car Care Aware
  • Call Us For Service: 507-451-8678