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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 Steve & Stacy's Servicenter, 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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ARI
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What our clients are saying about us

We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!

A very professional auto repair shop with intelligent staff working there also. Great mechanics too! quotes-image
, 01/25/2024
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Excellent service, prompt and friendly people that are great to help stranded motorists. We were at Embassy Suites and the car battery died and wouldn't keep a charge. American towing thru AAA came and got it and took it to the shop. Tow truck driver was really helpful and nice. The car was fixed in just a few hours. Wonderful experience in a large city knowing no one. Can't say enough good things about the help we got. We highly recommend them. Keep up the great work!quotes-image
, 01/24/2024