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805 Columbia Avenue Franklin
TN 37064

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Auto Doctor of Franklin

 ( Reviews)

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

Auto Doctor of Franklin


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 Auto Doctor of Franklin, 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


Reviews

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The staff is friendly and efficient. My questions were answered and my car was ready for pick-up sooner than expected. The location is convenient to my home.

, 07/15/2021

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they got me in on time and quickly found and corrected the problem. One of the most honest businesses I have dealt with. I will be a repeat customer and can not recommend them strongly enough.

, 06/24/2021

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These guy always do great work

, 06/11/2021

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