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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 Colvin Auto Parts, 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:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services

ASSOCIATIONS

  • AERA (Automotive Engine Rebuilders Association)
  • BBB (Better Business Bureau)
  • Car Care Aware

Testimonials

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    They have all the hard to find parts!!!!!. I have several classic cars this is where I go to get parts for them at the right price!!!!!!!!!!!

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    Great old school auto parts store with a crew of knowledgeable guys working there. Full machine shop service. A great place in a world filled with franchise McAutoparts shops its great to have Colvin in the neighborhood.

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    Place is awesome. They always have everything from hardware, nuts& bolts to a full engine machine shop. Great store, easy to deal with.

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    Great store! Great Machine Shop! Knowledgeable staff! Just a good full service shop!

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    You will not find a better place on Long Island. Full service engine shop. Years of knowledge that they willingly share. And if they don't know they find out and get back to you.

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    Great place always have the parts I need or can get them right away with friendly and knowledgeable staff