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 Autotech of Danbury, 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
I have brought my car in multiple times over the years and have received outstanding service every single time. They are incredibly thorough, honest and efficient (also funny!). I recommend them to everyone!
Danbury, CT
Autotech is Fantastic. Honesty, Extensive experience, Friendliness, Fairness, Sincere care for the customer and their car is what you'll get there. I've been a customer of theirs from a recommendation for 6 years with a Subaru. George, Annie & their staff are top notch. My last visit, George even brought out a part without me asking that needed to be replaced. To show & explain in detail why it had to be replaced & how he tried many ways to save it. He also explained things I could do to further help prevent the problem from reoccurring. All very much appreciated and educational. This kind of attention to detail and care for the customer is what you'll find at Autotech. I will always highly recommend Autotech, even if it's a little out of the way for the person. It is very hard to find this kind of service these days, especially for cars. Thanks to George, Annie & Autotech.
Danbury, CT
Danbury Autotech is the place to bring your car! Being a young woman I often feel hesitant going to any shop other than my local garage, but they've earned themselves another customer. Very honest and friendly guys with a good sense of humor. I brought in my 2008 Volvo for an assessment of my exhaust system, but they looked thoroughly at everything. My local shop wasn't telling me the full extent of what was wrong, never mentioning the amount of rust underneath or that my wheel bearing was bad (a sound I had been hearing for the better part of year and would bring up during oil changes, etc.) But these guys mentioned it after the first time looking at my car. Even from the initial phone call to make the appointment they were nothing but helpful and informative. I really appreciate George sitting down with me to go over what's wrong, and what to prioritize so I can safely drive my car while I shop around for something else. The quote they gave me is reasonable for what needs to be done. For the time being, I'm driving my fiancées car, but I look forward to returning to Danbury Autotech for the necessary repairs to my Volvo and future cars!
Danbury, CT
service was great, quick and easy!!!
Danbury, CT
