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 Zwiebel's Auto Repair Inc, 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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These guys are reliable, friendly, trustworthy, and do extremely good engine work. I have exclusively used them for 16 years. Most recently, my Toyota Avalon overheated in Sanford a week before I had to drive to Columbus Ohio for a wedding. They were able to work us into the shop rotation and replaced the cooling system and performed a tuneup. On our drive to Ohio and then back to North Carolina the Avalon logged 300,000 miles. Dave and the entire team will keep you on the road for the long haul.
So helpful!!!! I had an alignment done at another location, that I was told was too complicated for their team and I needed to go to the dealer. NO dealers! Soooo Zwiebel's Auto Repair was recommenced to me as an alignment specialist as well as a complete auto shop. I called, they made me an appointment, I dropped it off, they called back- ALL FIXED!! For their usual alignment fee. Nothing complicated, no overcharges, no extra parts... etc. AND they are pleasant to work with. I will use their business again - For Sure!!