Working Hours
  • Mon 9:00AM - 5:00PM
    Tue 9:00AM - 5:00PM
  • Wed 9:00AM - 5:00PM
    Thu 9:00AM - 5:00PM
  • Fri 9:00AM - 5:00PM
    Sat 8:00AM - 1:30PM
  • Sun Closed
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610-269-5585 | 899 Fern Hill Rd
Unit A, West Chester, 19380

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

M&T 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 M&T 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 work for a car dealer and i still take my cars to Mark to work on. He is honest and fair. If you are looking for a mechanic to call your own, Mark is your guy. He is a VET and eager to help you. I trust no one else to work on my cars!

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I had a wonderful experience here. Now my car runs so smooth!

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Man!! The best service ever. There is something about quality that is important when measuring value of a business and honestly. M&T Auto Repair delivered on their promise and fixed my car in a timely fashion and was very professional. I will definitely come here again...and get gas whenever I’m in the area!

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I was very impressed with the quality of service and knowledge of the staff. Family owned and operated I am a big fan of supporting the working man. Price was super reasonable. I highly recommend M & T to anyone looking for an honest, knowledgeable very professional mechanic! And a bonus Mark has over 20 years of service in the Army working on military vehicles.

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Good car and truck repair mechanic!

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Great repair shop, honest work, fair pricing, handles customers in a timely matter, and friendly service, highly recommended

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  • Call Us For Service: 610-269-5585