Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Auto Specialists Auto Repair
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 Specialists Auto Repair, 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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Great service. In and out for a smog test. Everyone was polite and friendly.
David Streeter, 08/14/2020
Excellent service. Took car right away and I waited for it. It did not take them anytime to put the new tires on my car. Everyone was very friendly. Next time I need more tires for my car, I know where to go. Thanks for all the good service I received for all the staff.
Shannon Sargent, 08/14/2020
Tremendous service, great information my regular mechanic.
Bruce Burford, 08/14/2020