Skip To Content

Best Auto Repair, St. George

950 S Bluff St St. George, UT 84770

435-673-3508
Opening Hours
  • Mon 8:00AM - 5:00PM
  • Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
  • Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
  • Sat Closed
  • Sun Closed
CONTACT US

435-673-3508 | 950 S Bluff St, St. George, 84770

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

Zion Motors

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 Zion Motors, 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

  • ASE (Automotive Service Excellence)
  • IATN (International Automotive Technicians' Network)
  • Jasper
  • NAPA
  • ASA Member (Automotive Service Association)
  • BG
  • Interstate
  • Car Care Aware

Testimonials

, 12/13/2019
Knowledgeable & Personable Our Vette needed a steering column harness and these guys knew more than the Chevy dealer did! Their prices are fair, they are timely and their work is impeccable! Also they stuck with their estimate!! Brent runs a great shop!
view all reviews
TAP TO CALL NOW 435-673-3508 X