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 All Things Automotive & Diesel 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.
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
Very friendly and helpful.
I KNOW JR AND THERE GUYS ARE THE BEST TO TAKE CARE OF YOUR CAR OR TRUCK!
Friendly, honest work, affordable.
I just wanted to drop a quick little note to let you know how much I enjoy "All things Automotive". I have had problems with some of the cars in my family and what ever issue we have All Things Automotive have been able to fix the problems. Not only fixing problems, but doing oil changes also. What a relief to get it all done in one place. They have always been on time and very friendly. I totally recommend them. I hope that you dont have car problems but, if you do. Feel comfortable going to them.
Late Friday afternoon my transmission fried out on the highway.. JR and his team stayed late lent us a car found us a decent place to Stay and had us on our way before noon the next day. Oh that was a Saturday.. They are closed Saturday.. Cant say thank you enough times JR!
I love the staff at all things automotive! They are honest, reliable, and hard working. I will always recommend them to anyone who has trouble with their vehicle.