Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
Hathaway Auto Repair
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 Hathaway Auto Repair, 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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Brian is 100% the best guy to go to for auto repair. He's honest, hard-working and reliable. He's worked on 4 of our vehicles over the years and I couldn't have been luckier to find him when I moved to the area in 2013.
Colin C., 05/22/2020
Brian did good work and kept me informed all along the process.
William S., 05/22/2020
Brian is a very reliable and helpful mechanic! I've never had this quality experience from any other shop before. Brian really takes care of your vehicle. He offers fair pricing and top quality work. I appreciate his passion for what he does and will continue to bring all my vehicles to him for future mods and maintenance! I'd highly recommend Allen Imports!!
Cedric E., 05/22/2020