845-292-1600 | 3309 Route 52, White Sulphur Springs, 12787
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 White Sulphur Auto & Truck, 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.
Paul Henriksen, 03/23/2023
My daughter had her 1994 Toyota pick up in for major engine repair. Seth spoke to my daughter about the repairs that were needed and an estimate on the cost. As a father of course I just wanted to check and see what was being done. After speaking to Seth I had complete confidence in what he had told my daughter. He was dead honest with her and was so thorough with communication and updates. The complex repairs were completed without any issues and the end result was a perfectly running 30 year old classic truck! Thanks to everyone at White Sulphur Auto, you are a class operation!