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 Laham's Auto 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
I won't go anywhere else! Laham's Auto has provided exceptional diagnostics, quality repairs, and customer service. Fred is an HONEST professional who offers attractive price and high quality work! I don't have to worry at all when I bring my car to Laham's!
We have done business with Fred for a long time, he is a great mechanic. Very honest! You can have any work done here and know you will be happy with the service, the price and the results. A+
I've been going to Fred for service for many years. Many of his customers are repeat and have been going there for years as well. Fred is a great mechanic and great at diagnosing hard to find problems. The prices are fair and he doesn't try to charge me for unnecessary service I don't need.
Honest, professional. I had to replace my radiator fan. VW JETTA. Dealership quoted $900 and told me I needed new battery for another $300 ($1,200 total). Laham's had the radiator replaced for $350 (used part) and told me that my battery still had plenty of life left. I asked for plenty of quotes. Some mechanics don't even want to listen to you and your troubles. Again, Laham's was very honest and professional. 5 stars I will be returning for any of my repairs.