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

Reliance Autocare


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 Reliance Autocare, 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


Reviews

Quote reviewiconTrustworthy Auto Shop
Heating and Cooling Services, near Nashua, NH

I highly recommend Reliance Auto. They gave us a very fair quote on the work to be done and had it done exactly when they said they would for exactly the price they quoted. Excellent service, very professional, quality work that's prompt and for a fair price.

, 06/16/2021

Quote reviewiconHonest Auto Shop
Car & Truck Care, near Nashua, NH

Honest and affordable very good at informing me about the work done I will definitely go to them again

, 06/16/2021

Quote reviewiconFamily Owned Auto Shop
Electrical Services, near Nashua, NH

Absolutely stellar service. I talked with Dave about an issue with my friends Forester, and he was super polite and respectful. Got the car towed to his shop and fixed the same day. He also explained the process of the repair and treated us like family. I'll be sending my business to Reliance from now on. Thanks!

, 06/16/2021

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