319-325-8650 or 240-419-8864 | 79 Commercial Dr Suite D, Iowa City, 52246
Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Rock 'N Tim's Automotive
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 Rock 'N Tim'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.
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Ashley D., 06/08/2020
These guys are the answers to your mechanical needs! I highly recommend going to these guys for all of your auto needs. Rocky has always gone above and beyond to diagnose my mechanical issues. He's always fair about his pricing. I know that when I go to him for my car repair needs, I can with 100% certainty trust the work Rocky does. Rocky has been my go to guy for all of my maintenance needs for a while, and it's so exciting to see him pursue his dreams of owning a shop.