Best Auto Repair, Middlesboro

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 Commonwealth Auto Repair Service, 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.


Reviews

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Awesome bunch of people that truly try to help you

, 05/26/2023

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Good and honest people I would recommend anyone to try them first before you call anyone other than them

, 03/02/2023

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Mike was polite and professional. I had an unexpected blow out and drove to there shop and had to call upon them to fix it he gave me a discount because I was low on money and it really helped me out. For that I am grateful cause I got two brand new tires and my vehicle fixed after I was told yesterday I would be safe to drive. Thank goodness they were close by had they not been I wouldn't have been able to afford towing

, 02/20/2023

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