Skip to main content

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 HonDoctor 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.


image-people-driving

OUR REVIEWS

 (1 Reviews)
image-quotes
reviewiconEngine & Transmission, near Kingsport, Tennessee

Jason is a WIZARD. I went without my car for 4 months, and I was so eerie about taking a built car to someone but I heard nothing but good things about him so I took a chance. He took my built k24/k20 Ek coupe and made her run better than ever. This car wouldn't even move under its own power when I brought it to him (I had it towed). But when I got it back, the smile on my face could say it all. I recommend Jason and HonDoctor for ALL your needs Honda/Acura. These guys know exactly what they are doing.

, 11/08/2022

partners

Federated Car Care Center
ASE Certified Master Auto Technician
Federated Nationwide Warranty
Federated Roadside Assistance Program
Honda Auto Repair
Acura Auto Repair
Car Care Aware