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

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 My Mechanic, 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

ASSOCIATIONS

  • AAA Approved Auto Repair
  • ALL-DATA
  • ASA (Automotive Service Assocation)
  • ASE Master Technician
  • Federated Auto Parts
  • IATN (International Automotive Technicians' Network)
  • IDENTIFIX
  • Jasper
  • Car Care Aware

Testimonials

  • reviewiconRandallstown
    My Mechanic is not finished with your car until you are satisfied.When you are satisfied then they are done. ...... They take pains to figure out what is wrong with your car... Friendly service helps also!
    , 03/31/2020

  • reviewicon
    Never had a problem in all the times I've brought my car here. The guys are friendly, funny, and honest!

  • reviewicon
    Clean restrooms, clean nice waiting room.

  • reviewicon
    Been going there for over 30 years always a pleasure always an honest estimate and always on time they may not be the cheapest but they back up their work and it's worth a penny or two more for that kind of confidence.

  • reviewicon
    Found My Mechanic through Dave Serio's website. They worked on my 2005 Honda Odyssey. Needed a new front axle and some brake work. They did a good job same day and I was very pleased. I will go back again for other service work in the future. Thanks guys!

  • reviewicon
    I took my truck to my mechanic because of a noise that I only heard on bumpy roads. They told me that it was a broken leaf spring and also recommended that I replace my stabilizer links. I had the spring taken care of immediately and returned to them for the stabilizer links. They also replaced the front rotors and pads at that time. They were very friendly and reasonably priced. I will be returning to my mechanic for future repairs without question.