502-966-8644 | 3800 Bishop Lane, Louisville, 40218
Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Barnes Auto Service
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 Barnes Auto 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.
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Kenneth Brown, 08/24/2020
This is Kenneth Brown I had a problem with my 2006 Ford Expedition the engine would cut off while I was driving in traffic. No one could find the problem, I called Barnes Repair and explained problem. On 04/16/20 Barnes found co sensor had melted on exhaust but they did not stop there they found several other things wrong. They kept in touch every step of the way of repair. They repaired my wiring harness and brakes. After I got my vehicle back they even called me to make sure every thing was ok. I would recommend every one if you have a problem with your vehicle get in touch with Barnes Auto Repair 5029668644 they will make sure your vehicle will be in top shape when you get it back. THANKS TO ALL THE STAFF AND TECHS