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 Conner Auto 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.
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We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!
Randy and his crew have done great work for me for years.
We were referred by our long time Honda specialist mechanic to Conner Auto when my daughter got a Subaru. They have been great in servicing the Subaru and fixing any issues. Most recently the Subaru's engine suddenly stopped running. They had to take the engine out and Randy advised to contact Subaru HO since it's related to a recent recall work they did. To our utmost surprise Randy didn't charge us for taking the engine out & for the diagnosis since we have to take the car to the dealer after all! Such a compassionate gesture! We're so blessed by this kindness. We strongly encourage you to have your cars taken care of by Conner Auto!