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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520-790-6035 | 5070 E 22nd St, Tucson, 85711

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

JayBees Auto 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 JayBees Auto 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

I do not even know what to call what my vehicle needs. In any case, Dr. J and her gang of highly motivated and talented folks have been trying to figure it out for quite some time. It gets better for a bit and then oops - crappy again. We are to a point of experimenting with all kinds of odd stuff I do not understand. I keep thinking I am done with the truck and then I see the cost of used trucks and change my mind back again. Dr. J and her staff have been nothing but friendly, knowledgeable, reasonable and just hard working great folks for the whole 34 years I have been using their services. Whether or not my old truck recovers and remains usable (the goal), I will always be thankful for the care and wisdom of the JayBees crew!

, 01/01/2022

So I've written one Google review not so long ago but this place so impresses me that I have to do an update. We have been customers for about two years now and they have saved me probably several hundred dollars by not repairing things that I erroneously thought were problems. I wouldn't have known the difference. That has happened twice in the past. Same thing today, a simple fix for something the dealer would probably have charged a lot more to take care of. This is a small family shop that holds itself to the highest standards of integrity and service. What a refreshing combo.

, 09/14/2021

reviewiconTransmission Service
Transmission Services, near Tucson, AZ

Spoke to Shelly about transmission service for possible slipping. She thoroughly explained a Transmission specialist is best and then referred a few placed. Shelly's customer appreciation shines bright even on a phone call. Thank you for your help.

, 04/20/2021

reviewiconHighly Recommend!
Car & Truck Care, near Tucson, AZ

Awesome Service & Great Communication. Highly Recommend.

, 01/14/2021
In a world of dissonance and diminishing customer service, Jaybee's sets a fine example for customer care. I never feel taken advantage of here and I appreciate their expertise especially finding problems before they get worse. Shelly is upbeat and sincere, a winning combination in my book.

, 09/17/2020
Great shop! Great staff! Honest and fair. They know what they are doing.

, 04/23/2020
  • Parts Plus Car Care Center
  • ASE (Automotive Service Excellence)
  • ASE Certified Master Auto Technician
  • ASA (Automotive Service Association)
  • IATN (International Automotive Technicians' Network)
  • IDENTIFIX
  • Tucson Metro Chamber
  • BG Products
  • Gates Belts & Hoses
  • Interstate Batteries
  • Jasper Engines & Transmissions
  • Monroe Shocks & Struts
  • Car Care Aware
  • Call Us For Service: 520-790-6035