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 Folbeck 4 Wheel Drive, 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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Steven Bill, 08/19/2022
My wife and I drove from Seattle Washington to Reno. We developed a coolant leak in the middle of moving our daughter into her dorm at UNR. My sister recommended Folbecks 4WD. Folbecks squeezed us in on a Thursday, had our heater hose replaced and cooling system serviced by Friday. By Saturday our daughter was moved in and we were back on the road to Lake Tahoe for the weekend. This was probably the best customer service and repair experience we have had. Thanks to Folbecks 4WD our week in Reno/Tahoe was a complete success. RJ was very professional and very helpful. I would recommend Folbecks to anyone in Reno/Sparks who needed auto repair services. Thank You to RJ and all the mechanics and people at Folbecks.