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Best Auto Repair, St. Louis

8646 St Charles Rock Rd St. Louis, MO 63114

314-427-2840
NAPA
Opening Hours
  • Mon 8:00AM - 6:00PM
  • Tue 8:00AM - 6:00PM
  • Wed 8:00AM - 6:00PM
  • Thu 8:00AM - 6:00PM
  • Fri 8:00AM - 6:00PM
  • Sat 8:00AM - 4:00PM
  • Sun Closed
CONTACT US

314-427-2840 | 8646 St Charles Rock Rd, St. Louis, 63114

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

Floyd's Tire & Car 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 Floyd's Tire & Car 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

  • BBB A + Rating
  • ASE (Automotive Service Excellence)
  • AAA Approved Auto Repair
  • NW Chamber
  • AASP
  • BG Products
  • Valvoline
  • Car Care Aware

Testimonials

Drove in from Ohio Friday night. Car broke down on busy I-70. Called AAA for auto shop recommendations, they gave me two that were the closest. Called the first only to be told can't help us. Second call was to Floyd's. They said get car there in the morning and we'll look at it. Dropped car off, spoke with Nikki and left. Returned a few hours later and was told all checks came back good (no codes or mechanical history showing why it broke down). They ran car thru the paces and still found all okay. I cannot thank the team there that Saturday enough for looking into our car issue. This allowed us that peace of mind to drive back home. We highly recommend Floyd's to everyone who has auto needs. They are fair, friendly and go well above expectations for service.
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