502-222-7182 | 4705 South Highway 53, Crestwood, 40014
Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Barretts Auto & Diesel 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 Barretts Auto & Diesel 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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Rich B. - Rochester, MI
While on a trip from Elizabethtown back to Michigan my engine starting making a terrible noise. I started looking for nearby repair facilities and came across Barrett's. After getting towed there, met with Ken the owner. He quickly diagnosed the problem and within a couple hours I was back on my way home. I can't say enough about how well I was treated and how honest and friendly Ken was. If I lived in the area it would be no doubt who my mechanic would be.