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 Accurate Automotive & Mechanical, 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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Sean and the team at Accurate Automotive are incredible. Our go to mechanic that provides honest and cost effective repairs for our vehicles. Would give these guys 10 stars if I could. 100% recommend. Great communication, quick response times and quality work.
We took our Kia Sorento there for a repair that a different company quoted at $1,300 to fix. I then went to Lucas at Accurate for a second opinion and he told me he could get the same job done for $950, so he earned our business. He then gave me a call after looking deeper into the issue and he found that the actual problem wasn't as serious as the original diagnostic had told us. The total repair then cost us around $500. His due diligence in checking to make sure the issue is what we had thought saved us time, money, and a huge headache. Thank you Lucas! We will be back if we need anything else with either of our vehicles!