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 Long Hill Auto Service, 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.
Reviews
|
I can’t say enough good things about Long Hill Automotive. I brought my Ram in with some major shifting and electrical issues that had been giving me a lot of trouble. They took the time to properly diagnose the problem, figured out exactly what was going on, and got everything taken care of. What really impressed me was the level of service. After the work was completed, they actually called me to follow up and make sure everything was running properly and that I was happy with the repair. You just don’t see that kind of customer service very often anymore. Knowledgeable, professional, thorough, and they genuinely seem to care about their customers. My truck is running great, and I couldn’t be happier with the experience. I highly recommend Long Hill Automotive to anyone looking for a shop they can actually trust. Five stars all the way!! Nirio GarcIa, 08/27/2026 |
I can’t recommend this auto body shop enough! We’ve brought all of our cars here over the years, and every single time the experience has been outstanding. The work is always top-notch, the attention to detail is incredible, and you can genuinely tell that this guy takes pride in what he does. What really sets him apart is the honesty, professionalism, and customer service. He treats you like a person instead of just another customer, keeps you informed throughout the process, and makes sure everything is done right—not just done quickly. It’s hard to find someone you can fully trust with your car, but we’ve found that place. If you need body work, repairs, or anything automotive, do yourself a favor and bring your car here. You won’t regret it. Absolutely the best around! Nirio garcia, 08/27/2026 |
Excellent service. We came in with a puncture 10 minutes before they closed, while we were in the middle of a long road trip, and they got us patched up and back on the road very quickly. James Knight, 07/20/2026 |
Partners
