Working Hours
  • Mon 7:30AM - 5:00PM
    Tue 7:30AM - 5:00PM
  • Wed 7:30AM - 5:00PM
    Thu 7:30AM - 5:00PM
  • Fri 7:30AM - 5:00PM
    Sat Closed
  • Sun Closed
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727-343-4242 | 7121 9th Ave North, St.Petersburg, 33710

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

Affordable Auto and Truck 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 Affordable Auto and Truck 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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Bob and his staff are amazing! They are all very professional, friendly, and upfront with prices. We have been taking our cars there for a few years now and have always been very pleased!! As long as Bob is in charge we will be customers. Thank you for great and honest service!!!

, 09/27/2021

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Great service. Squeezed me in when battery suddenly died. Installed new battery and cleaned up all the connections. In and out in 20 minutes. Fair price. Friendly and professional. Will use them again.

, 04/03/2021

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Fair price, quality workmanship.

, 03/16/2021

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First time taking my car here. I went by A.A.A. recommendation for certified shop and good reviews.. Close to home too! I feel I was treated honestly. That's a big deal. The manager also took the time to explain the repair very professionally.

, 03/02/2021

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Bob, the owner, took really great care of my older vehicle. Very friendly and affordable.

, 03/02/2021

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We were on vacation and a long way from home when the brakes started scraping and making noise. These guys checked our brakes free of charge and ensured us it was nothing to worry about, which was a big load off my mind. They could've easily taken advantage of us. Highly recommended.

, 02/24/2021

  • ASE (Automotive Service Excellence)
  • IDENTIFIX
  • Jasper
  • AAA Approved Auto Repair
  • ASE Master Technician
  • BBB Accredited Business
  • ALL-DATA
  • Mitchell1
  • Car Care Aware
  • Call Us For Service: 727-343-4242