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 Morrison's Auto-Rite 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.


Partners

ASE (Automotive Service Excellence)
ASE Master Technician
caffenero
jpopen
tresgatos
jpyouthleague
dcrkellyskating
Car Care Aware

What our clients are saying about us

We have established longterm and stable partnerships with various clients thanks to our excellence in solving their automotive needs!

Been using this business for years and am always 100% satisfied. Clear communication on what work needs to be done and the cost, never pushy about it, and the work quality is high. I’d recommend to anyone quotes-image
, 02/23/2024
reviewicon
Jovani and the team here were quick, professional and a pleasure to work with. Brought in my car on a flat tire and they were able to get it replaced and then some at a fair price with clear communication the way through. Will definitely be coming back.quotes-image
, 02/17/2024
reviewicon