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 Johnny'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.
More AC Repair Services:
I'm very happy, The service was awesome and the repair were done Good & Fast. I will definitely keep you'll as my new go to guy's.
Check engine light came on my vehicle. Brought in to Johnny's without an appointment. Diagnostics and repairs were made day of. Up front fair prices, with no hassle. Front to back staff were professional. You get a good sense and vibe when you walk into the establishment. Spacious and clean, with plenty of room to sit while you wait for a service repair. There is also a bay area entrance window you can watch your vehicle being serviced. Complimentary snacks and beverages are also available for paying customers. Lastly, a red rose was left on the steering wheel column when I entered my vehicle leaving the shop.What a pleasant experience from start finish. This place is the best around. You want the best, you go to Johnny's. There reviews speak for itself. Thank you for making my automotive exprience a great one. Ciao