757-488-1964 | 4650 Portsmouth Blvd, Portsmouth, 23701
Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
John's Service Center
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 John's Service Center, 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 was looking for a reputable repair shop to take my car for service. My neighbors recommended John's. I first took my car for state inspection and oil/filter change. I was in and out in less than an hour. On another occasion my son thought he needed a battery for his truck. We stopped in at John's as he was going to lunch, but he took the truck in and replaced the battery. My wife took her car to several local shops including some dealerships due to a loud roar in the front. She was told she needed a hub bearing. The price of repair ranged from 600-800 dollars and about 4hrs to perform the repairs. I took her car to John's who was booked full all week. I explained my wife had to go out of town for Christmas and was afraid to drive it with a bad bearing. I was told to bring it in tomorrow morning. He did the work for less than all the other shops and completed the work in about two hours. Again, this shows a business that cares about customer satisfaction. Needless to say, John's Service Center has won over my entire family and we have found a place that appreciates our business. I highly recommend this company to anyone looking for a decent place to service your vehicle needs.