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 Moncur's 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.
Contact Us Today!
Got questions? We've got answers! Drop us a line, give us a call, or even stop by. Our team is eager to help you with any auto repair needs you have. Let's get you back on the road safely and swiftly!
What Our Customers Are Saying
Had some transmission issues, but they fixed it quickly and at a good price. I’d definitely recommend them!
Mesa, AZ
Been taking my family vehicles here for nearly 10 years. Would highly recommend.
Mesa, AZ
Firstly, I would like to say I'm extremely glad I stumbled upon this business! I was looking for a reliable place to get an inspection and the 40k service done on my Alfa Romeo Giulia. Right off the bat, the moment I walked in, I knew my car was in safe hands. Beautiful people and an honest family business that I would urge more people to support. From finding me a timeslot that worked best for me to accommodating me so quickly, Kerry was incredibly knowledgeable and transparent throughout the process. Servicing an Alfa is something that hits the wallet hard, but after their inspection, they were honest about what actually needed to be changed at the moment, without pushing unnecessary services. The quoting process is amazing! They send you a detailed breakdown via text, where you can see every single charge and approve it individually. No hidden charges or surprise fees. You pay what you see. To top it all off, my car was ready the very same day, within just a few hours, which made the whole experience incredibly convenient for me. I can't express enough how much I appreciate this experience. Look no further and give them a chance. They did a lovely job on my Alfa, and it's back to running like a beast. Thank you again, guys! I'll definitely be coming back in the future for any issues.
Mesa, AZ
Wish there was a shop like this in Tucson. My CRV broke down at Gold Ranch Resort just as I pulled in. Power steering that had been installed in Flagstaff last December quit. When I called Moncur's Automotive they readily told me to have it towed in and they would diagnose the problem and fix it. That's just what they did the same day. Excellent communication all the way. Very Professional. Just what everyone wants in a care care professional. Thank you again.
Mesa, AZ
