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Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

 20 Verified Review(s)

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 Nate's Automotive, 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.


what our customers say

these guys are awesome! We were stuck out of towners and they got us back on the road in a couple hours. THANK YOU!
C


Great guys. Very kind. Honest. Trustworthy. Very nice shops too. They do good work.
J


Awesome work. Fast in and out and reasonably priced
W


Very friendly family owned garage do great reliable work.
R


Had brake trouble on a long drive home. Pulled into Nate's to get them checked out. The man that was there stopped what he was doing and checked them out right away. Really great and friendly service!
D


My new mechanic in Lancaster County. Honest, reasonable and accurate.
B


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