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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 McKonly's Garage Inc, 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.

Contact Us Today!

Got questions? We've got answers! Drop us a line, give us a call, or even stop by. Our team is eager to help you with any auto repair needs you have. Let's get you back on the road safely and swiftly!

What Our Customers Are Saying

McKonly's Garage was fantastic. They got my car in for inspection and emissions and I got a detailed report later that day. I love the report because it breaks down all recommendations for services and whether or not they are required or just regular maintenance. The service was fast and easy and they called me back within the hour to pick up my vehicle. Highly recommended!!! I love supporting a family owned local business instead of going to Pep Boys!

Great place to go. Easy to work with and set up appointments. Took my car in for inspection and they show you what proactive maintenance you need to keep your car running smoothly. Will inform you with any questions you have about it . They are very knowledgeable about their trade there.

McKonly's Garage offered a car care workshop for my troop of Senior Girl Scouts last week. The technicians were helpful, thorough, patient, and really great with the kids. They taught the girls valuable skills for car maintenance and safety. They were incredibly generous with their time and talent. Not only is McKonly's Garage a great family business to work with, but they truly care about the community.

These guys were great. My car's front axel snapped and they were able to get it in and fixed right away for a good price. They were prompt, professional, and honest. They made some additional maintenance recommendations but didn't pressure me into spending more money than I had to. Definitely will be back!

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