503-639-1768 | 9075 SW BURNHAM ST, TIGARD, 97223
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 Henderson 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:
A.H. (Joe) Giehm, 09/13/2021
The team at Henderson Auto went above & beyond & far exceeded our expectations!! The week of 9/6 we left our home in SoCal on a 4 week road trip in NoCal the battery light came on and we limped into a Ford dealership where they diagnosed a bad battery and weak alternator.they replaced the battery & sent us on our way in Beaverton we again went completely dead, called AAA which took us to a nearby Ford dealer where we were told it would be 9/19 before they could look at our F-150. I called another dealer and they sad it would be 9/30 before they could check it friend recommended we try Henderson as did the tow truck driver Henderson said it may be the 13th before they could check the truck took it to Henderson on the 8th, they did a 10 point inspection on the 9th, repaired everything that needed fixed including a new alternator (urgent), headlight, license plate light (non-urgent) and had the truck ready for a touch free pickup on that afternoon!! A gigantic thank you to Brian, Katie & their team for keeping our trip on schedule!!