Working Hours
  • Mon 7:30AM - 5:30PM
    Tue 7:30AM - 5:30PM
  • Wed 7:30AM - 5:30PM
    Thu 7:30AM - 5:30PM
  • Fri 7:30AM - 5:30PM
    Sat 7:30AM - 3:30PM
  • Sun Closed
    Temporary Hours
settings

314-837-6250 | 14241 New Halls Ferry Road, Florissant, 63033

Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

Ronsick's Auto Care

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 Ronsick's Auto Care, 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:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services


What Our Customers Are Saying

reviewicon

Brought my vehicle in thinking I had a tie rod problem which would be expensive but thanks to Ronsicks Auto they checked out my vehicle and found it was not the tie rods but something different. They saved me $500 + in repairs. I like their honesty and prompt service. They have my business going forward. The staff is very professional and polite.

reviewicon

Exceptional service! The team is very caring, attentive to detail, and cost if service is always reasonable price, The strong customer care culture is endorsed by all employees and is clearly demonstrated by the owner, Steve Sr and Jr. Thanks for caring!

reviewicon

Had my car in for a state inspection and to find the source of a squeak in the rear of the car. I was told that a strut was the source of the noise & to take it back to whoever did the installation because it should still be under warranty. Very honest workers.

reviewicon

Service was fast and the staff was super awesome! It's always nice to walk in and see Steve. I never fell pressured, service and recommended repairs are always explained. Any recommendations are given in a written estimate which is helpful. Thank you!

  • ACDelco
  • Jasper
  • O'Reilly Auto Parts
  • AAA Approved Auto Repair
  • State Inspections
  • ASE Master Technician
  • Nexen Tires
  • Gateway Vehicle Inspection Program
  • Car Care Aware
  • Call Us For Service: 314-837-6250