Replace Your Car's AC Thermal Expansion Valve or Tube in North Hollywood
 
Car AC Valve and Tube Replacement
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 Superior Auto Clinic, 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.
Don't let a faulty valve compromise your comfort! Contact us today at Superior Auto Clinic to schedule a professional replacement of your car's AC thermal expansion valve or orifice tube. Ensure your AC system operates efficiently and effectively with our expert service. Call now at 818-755-1026 or book online!
OUR REVIEWS
North Hollywood, CA
Mitch Lusas, 10/27/2026We’ve been taking our cars to Paul at Superior Auto Clinic since around 2010, and he’s still the only mechanic I trust. I came in on a slammed Saturday morning with my 15-year-old car running rough, and they still made room to diagnose it; they confirmed is was spark plugs and ignition coils, caught dried-out gaskets and hoses, and texted me photos, a PDF report, and the full estimate to approve. They even checked that the engine was healthy enough to be worth investing in... that kind of honesty is why we keep coming back. They told me it would be finished Monday, but about five hours later they called to say it was complete with OEM parts, and when I got in, it drove like a new car. What I appreciate most is that they walk you through everything; what they found, what they did, and why. Paul makes it feel like he has a personal relationship with you, not just a repair shop. Diligent, fast, and genuinely friendly; if you need a mechanic in North Hollywood, go see Paul and his son Aram.


