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 Williams Automotive Inc., 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.
what our customers say
Getting your only vehicle for your household in for service due to engine codes going off for me is a nerve racking experience. But let me tell you the service and honesty and professional attitude of this service center has made me a believer in "good" people left in the world. Not only did they take the time to explain the issues my vehicle had but helped me out getting me to work and home. Dennis is a amazing man and his shop will always be where I will take my cars to forever. They fixed my car and got it back to me, so I can get back to taking care of my family and really treated me like "I mattered to them". Thank you again for everything you have been doing for our community and I appreciate everything you did for me that no other service center would do! My vehicle is running well as it should! Bravo!
They are awesome. We will only use them from now on. Went in for 2 front tires, and had gotten a safety inspection. We were sure we needed drivers side brakes replaced and had mentioned it to them. They really could have taken us for more money but they are truly HONEST. They told use all the brakes on the car were great and the only thing they recommended was an alignment. So glad we stopped there instead of the cheaper place "Walmart". This establishment cares and is honest. I will recommend them to everyone I know.
I could not be happier with the professionalism and service of the these guys! I had major damage to my daughter's engine and they made sure I was completely aware of everything that was going on. They sent pictures, emailed, called?. They took their time and did exceptional work. Zero surprises Fees were fair and reasonable I never felt like they were taking advantage of me because I am a girl (which happens sometimes) Absolutely the best repair shop. They gained a forever customer.
My truck's water pump gave out, and the serpentine belt flew off on the highway. I had my insurance company tow it to Williams Automotive Inc. I spoke with Jeff, and he informed me of what the damage was. He gave me a best and worse outcome for the fix. It has been my experience that when you are given two options of what may happen from an automotive shop, it's usually the more costly repair that you get to deal with, according to them, when they get back to you about it. However, surprisingly, Jeff got back to me via text with a picture of the object in question and informed me that the cheaper fix will do. I was shocked to say the least, and definitely happy about the good news. I believe they did excellent work, and gave me excellent customer service at a reasonable price. Would not hesitate to go back if/when needed.
10 out of 10 as always. The mechanics do great work, no one tries to up sell you on anything. If a new or potential problem is discovered, while your car is being repaired for the original reason it's being worked on, NO additional or surprise repairs are done without the customer's approval first. Customer service is top notch, always professional and courteous, and the customers are always greeted like family. We will not take our vehicles anywhere else.
