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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 Affordable Auto Repair, 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.


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OUR REVIEWS

 (2 Reviews)
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reviewiconTires, near Miami, FL

Affordable Auto Repair in Miami is amazing, full stop. I brought my Mercedes SLK 55 AMG in for a second opinion after another garage told me I needed shocks and struts, quoting me over $3,000. I was ready to pay, but a friend suggested I call around first. After getting quotes from five places, Affordable Auto Repair was the last and immediately, I could tell they were different. I spoke with the owner (I wish I remembered his name!), and he was skeptical of the diagnosis. He mentioned that such a repair would be rare for my car and invited me to bring it in for a quick check. Even though they were fully booked, they still squeezed me in. Sure enough, he was right I only needed new tires. Not only did they save me thousands of dollars, but they also went the extra mile. Initially, they couldn't schedule the repair until the following week, but they made it work so I wouldn't have to drive on a spare over the weekend. They have earned a customer for life, and I've already sent another customer their way. If you need honest, reliable auto repair, GO HERE.

, 02/07/2025

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