585-398-3299 | 1531 Rte 332, Farmington, 14425
Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
MC Automotive Inc
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 MC 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.
More AC Repair Services:
Allison H., 07/20/2021
Today is a day my faith in humanity is restored! I have always felt more then confident in our Mechanics at MC Automotive but today is one of many days that ensured me we are in the BEST hands. Our new to us Yukon XL Denali was presenting issues with the dash and starting or not starting. I brought the vehicle in on very short notice and when picked it up it was working fine. It would not present the multiple errors bc the car was not having issues starting at the time. Joe, noticed my positive battery connection was loose. Thinking this may have been a contributor or cause. On my drive home the car finally worked perfectly. I made a stop before heading home and when attempting to restart my vehicle I was unsuccessful after multiple tries. I reached out to Christin in the office who kindly listened to all of my concerns and advised me to call Mike, the owner of the shop. He was extremely helpful and willing to do whatever needed to be done to get me up and running! . He sent his Mechanic, Joe to my rescue with a machine to read any errors and attempt to start the vehicle. After working very hard for well over an hour in the heat and sweating it was decided it may be an issue for the Dealership itself to reprogram modules or correct issues. But also offered that if it was determined that the error codes or issues did not need to be programmed by the dealership then I could bring it back to him and he would do whatever needed to try and fix it. He took so much time and effort out of his day as did Christin and Mike to answer my calls, and my concerns immediately. It feels like family there and who wouldn't want family working on their cars? I will always and forever as long as they are in operation...continue to bring my vehicles to them. Hands down they are the BEST automotive repair shop I have ever been to. If only everyone operated this way and treated their customers with such care the world would be so much better!!!!!!!!