Working Hours
  • Mon 8:00AM - 5:00PM
    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • Sun Closed
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530-221-4132 | 1270 Hartell Ave
Suite C, Redding, 96002

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

D & H Automotive

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 D & H 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.

More AC Repair Services:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services


What Our Customers Are Saying

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I over heated on I-5 and had it towed in to D&H Automotive. They took great care of me. The price for what I had done to my car was very reasonable. Very professional and honest. The owner stayed way past 5 working on my car, I needed to get back on the road. I totally would go back there and I suggest if you're from out of town you would want to go there for great service. Thanks again D & H!

, 10/14/2021

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I had a dead battery and Dan stopped what he was doing and walked down and charged my battery. Kind, helpful - GREAT local business. Thank you!!!

, 09/27/2021

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Shane always does a good job, if I take my car to a shop I take it to his shop. I usually work on my own cars tho

, 07/31/2021

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They repaired my Air Condition and it works GREAT.

, 07/28/2021

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During the tail end of a 2 week road trip my alternator broke down. Out of 10 places we called in redding: the owner of this shop (Shane) was a godsend. He dropped what he was doing to squeeze us in and help us out. We were back on the road with a new alternator for a reasonable price in an hour. Considering the vulnerable situation we were in, Shane showed us upmost humanity and professionalism. 6/5

, 07/22/2021

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Shane does great work at a even better price! I'd reccomend them to anyone. They are honest and provide high quality customer service!

, 05/26/2021

  • BBB Accredited Business
  • Napa Auto Care Center
  • Car Care Aware
  • Call Us For Service: 530-221-4132