Replace Your Car's AC Thermal Expansion Valve or Orifice Tube
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 Mike's 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.
More AC Repair Services:
I had a "low tire pressure" light come up while driving. Searched the web for an Audi dealer (car is a 2017 Audi A3) and discovered the nearest dealer is at least 30 minutes away. Decided to look for a local shop and found Mike's Auto Repair to be nearby. Arrived a few minutes before closing time but Mike still took my car into the shop. They checked all tires and adjusted 2 tires that were low and brought them to proper pressure. Additionally, they put the car on their lift and checked the tires for nails / screws - none were found. When asked: "how much do I owe you?" the answer was "nothing". In today's day and age it is rare to find such treatment and I am going to come back and use Mike for all my routine oil and brake services ! Highly recommend this shop. Thank you Mike for your help.