Skip to main content
image-car

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 Forest Brook Automotive, 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


image-people-driving
image-quotes
reviewicon

I want to thank you for getting me in and looking at my car. I came down on vacation and ended up with an oil leak. You took the time and helped me as much as you could. Just want you to know I made it home. Again thank you!!


tire-track-image

Get free Coupons

Take advantage of these great offers!

MILITARY DISCOUNT

5% OFF! WE APPRECIATE YOUR SERVICE!

Not valid with any other offers.

STUDENT DISCOUNT

5% OFF!

Not valid with any other offers.

$49.99 Winter Check Special

Not valid with any other offers.

$10 Off Coolant Service

Not valid with any other offers.

partners

ASE (Automotive Service Excellence)
IDENTIFIX
Jasper
Interstate Batteries
Valvoline
Cooper Tires
Dunlop Tires
Hunter HawkEye
Pennzoil
Lynchburg Regional Business Alliance
Car Care Aware