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 River Oaks Automotive Center, 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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What Our Customers Are Saying
Great service always !!! Very gentle, professional, flexible and very quick!!! Your service helped lots for my car lifetime!!!!
Houston, TX
Came in for a state inspection. Fast and professional, they didn't try to upcharge anything. Also, while I was there, a woman with little car knowledge who would have been an "easy mark" for some shops walked in. The service advisor was honest and professional in helping her understand her issue, that she potentially had a warranty claim with her previous services, and a tip on how to negotiate a fix. I would trust them if I need future work on my vehicle.
Houston, TX
My husband and I have been clients for years. River Oaks Auto Center has serviced our Mercedes for everything including body work. Top notch and fair prices. Vince who manages the office is the best. So knowledgeable and professional.
Houston, TX
The mechanics completed an alignment that left my car feeling much safer to drive. They mentioned it wasn’t perfect, yet I hope they realize the amount of relief they’ve given me with even as much labor they put in. My car isn’t perfect either, and thankfully, they walked me through the next steps of work that are necessary to make sure the car reaches an even greater point of safety. It will take time but they have offered reasonable estimates.
Houston, TX
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