Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Landmark Auto Group
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 Landmark Auto Group, 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.
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I wanted to say thank you for the great service! Al was super knowledgeable, nice and patient. I appreciate the warm service, as I have found in the past, auto repair shops being intimidating and condescending. The service here was the exact opposite. I will be back for my follow up repairs and highly recommend Landmark Auto Group to anyone that is need of car repairs. Thank you!
JENNIFER DONNELLY, 11/17/2021
I am sooooo HAPPY I tried this place, a year ago. They are HONEST; PROFESSIONAL; REASONABLE; AND FRIENDLY. I have a Diesel Porsche and they take of all of my needs. Thank you!
Jack Brown, 11/02/2021