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 Landmark Auto Group, 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

Can't say enough positives about Max. We drove from Boston to Fairfax to visit grandkids, then to Old Town to enjoy. Suddenly a noise from under the car, a flap dragging on the ground. Not a good situation. Reviews online (Google, Yelp, others) all point to Landmark Auto and Max. Called and he said bring it in. He was kind and reassuring when we arrived, put our car up on a lift. His mechanic immediately saw the problem, nothing major, a quick fix, an incredibly fair price. It was a great experience, in a vulnerable moment, to be treated so well and taken care of. This is a long way of saying that I highly recommend Max because you can trust he will treat you fairly and fix your car.

, 11/02/2022

I had gone to 4 other auto repair shops to get my tire patched up but no one could fit me into their schedule. Gabe got me in even though they were busy and really helped me out because I have to make a long road trip the next day. Truly life savers. These guys are super nice and efficient. 5 star people.

, 11/01/2022

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Perfect, thanks.

, 07/11/2022

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