Working 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 Closed
  • Sun Closed
settings

301-770-2230 | 12025 Nebel St, Rockville, 20852

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

Golden Gears Automotive, Inc

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 Golden Gears Automotive, Inc, 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

Sam helped me with the transmission. I was hesitant if I should replace it as my car had 100,000 miles. He worked with me. Thank you-

reviewicon

Sam and his team are wonderful! He is honest, fair and will go out of his way to find the best solution to any issue your car may have. Sam is courteous and generous, and I highly recommend Golden Gears. I teach at a school nearby and we ALL take our cars to him. I just picked up my car from his spotless workshop, and Sam found a cosmetic flaw which he fixed on the spot, free of charge. Golden Gears is a treasure.

reviewicon

I know that the job will be done right, and that it was needed.

reviewicon

Great service, Sam is very attentive and helpful, the service is very trustworthy.

reviewicon

Truly impressed by GOLDEN GEARS, both the the level of professionalism of the staff and owner Sam as well as technical know-how. Overall, would (and will) return in a heartbeat. Honest & trustworthy-- two characteristics that are all too hard to find these days. Thank you, V, J and Sam. I'll be back (hopefully not too soon, though!)

reviewicon

I've been coming to Golden Gears for 10+ years. Sam and the team always do a great job. It's invaluable to have a mechanic you can trust.

  • ASE (Automotive Service Excellence)
  • IDENTIFIX
  • Jasper
  • ASE Master Technician
  • BBB Accredited Business
  • ALL-DATA
  • BG Products
  • Car Care Aware
  • Call Us For Service: 301-770-2230