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 Dennis Mitchell'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.
More AC Repair Services:
Truck and Car AC Repair Services
Freon Recharging Services For Your Car Or Truck
AC Evaporator Services
What People Say About Us
I sure do appreciate Dennis Mitchell Automotive. They are fair, honest and on time. Great work yall!
I had a problem with a misdiagnosis and paying for repairs that I didn't need. As soon as Dennis Mitchell found out I was not satisfied he personally called me at home and offered to refund a portion of the cost of the repairs. In the end it worked out. Thank you for taking a personal interest in my problem and making it right.
These guys were great. I had some power steering trouble while visiting Jackson and needed it fixed quick so I could get back home. They got it done by noon that day. Thanks to the Dennis Mitchell team.
I just had 4 new Michelin tires put on my 2017 RAM. The alignment and balancing is just perfect and the truck rides like new. Thank you.
There are not many I trust the health of my vehicles with. Dennis Mitchell and his entire staff are a class act. Very friendly, easy to work with and very efficient with your time. Thank you guys for taking care of my personal vehicle as well as the vehicles we send you from our dealership!
Dennis Mitchell 's is where I take "Barney" (the Mayberry Squad Car) for any mechanical work that I need. They always do excellent work in a timely manner.
One day before I was going to enter a parade my car was running hot. They stayed over a couple of hours to repair the radiator so I could make the parade the next morning. I have to say there is a lot of 'Mayberry' friendliness at Dennis Mitchell's !