Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Action Auto Services, Inc.
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 Action Auto Services, Inc., 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.
More AC Repair Services:
Abel Almodovar, 07/26/2021
I had an appointment at another shop that was a installer for tires that I had purchased at Tire Rack (Pep Boys Palatine). When I got there at my scheduled appointment time they told me it would be at least a two hour wait before they got to my car. I asked what was the purpose of making an appointment then? I then asked how much additional fees would be for installing my tires as their fee was advertised as $78. I realized that my car had tire pressure sensors and it was a good idea to replace them while the tires were off the rims. I had priced what Tire pressure sensors for my car would cost before I got to their shop. The price varied from different sources but the range was from $30 to $80 each. I figured on the high end as I was a new customer to them. So in my mind $80 X 4 = $320 + $78 install = $398 + tax $40 Total around $438. They said $548!!! I said what is the extra $110 for. Pep Boys says to program the sensors. At this point I was furious, so I said forget it I'll take my tires somewhere else. I went down the street to Action Auto where the owner Ira, listened to my story and took my car in without an appointment. They then removed my tires and tire pressure sensors and mounted my new tires with new tire pressure sensors, balanced the tires and reprogrammed the tire sensors to be compatible with my cars system. They even checked and doubled checked that all four tire sensors were showing the correct tire pressures. The cost for all these services with tax out the door $318. $318 vs. Pep Boys $548 not to mention them telling me I would have to wait at least two hours before they could get to my scheduled appointment, I guess I made the right decision plus I saved $230! Thanks Ira, Jose and Mike!!!!!!!
Fast, quality service on my truck. Very welcoming, very clean shop. They asked questions, and suggested things to watch, and helpful on items coming up. Out in 20 minutes as promised!
D Lane, 02/03/2016