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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 Murphy's Family Auto, 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


Partners

ACDelco
ASE (Automotive Service Excellence)
Jasper
BG Products
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!

I would like to thank Murphy's Family Auto for going above and beyond to diagnose and repair the wiper problem on my motor vehicle. Everyone that I dealt with was extremely friendly and professional. I was totally impressed with how I was treated, and would highly recommend the garage to anyone looking for a reliable auto repair company. quotes-image
, 01/26/2021
reviewiconWiper Problem
Electrical Services, near Howell, MI
Big shout out to Dennis and the gang for taking good care of my car. This is the place to go for prompt service, and expertise sadly lacking at some dealerships. You guys are my new go-to auto repair shop. Kudos!!!quotes-image
, 01/21/2021
reviewiconMy new go-to auto repair shop
Howell, MI