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 Alameda Auto Care Center, 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
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I have taken my Mazda CX-7 to Alameda Auto Care twice for regular maintenance and have been very happy both times. Great service, and great location to drop off your car and telecommute while they work on it! Happy to have found a great mechanic in my new neighborhood!
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I've been going to Alameda Auto Care for years now. They are professional and very reliable. Most importantly, David and his team are very honest. They take care of my family's three vehicles and always take the time to speak to me about the work that is required and any issues that might arise and cost implications. Choosing a great mechanic is important - you owe is to yourself to check out Alameda Auto Care Center.
