570-320-0030 | 224 South Market St, Williamsport, 17702
Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Dave's Pro Auto Service
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 Dave's Pro 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.
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Kim Manion, 09/22/2021
We were traveling through Williamsport on our way to a wedding in western PA when we noticed a strange noise on our 2009 Honda Civic hybrid we stopped by Dave’s and they checked it out immediately and and replaced the brakes in an hour so we were back on the road. The price was standard snd they extended an AAA discount. The best part was the hospitalityespecially from the dogs Fred and Flynn.