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Best Auto Repair, Libertytown

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Replace Your Car's AC Thermal Expansion Valve or Orifice Tube

 87 Verified Review(s)

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 Roche Automotive 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.

More AC Repair Services:

Truck and Car AC Repair Services

Freon Recharging Services For Your Car Or Truck

AC Evaporator Services


what our customers say

Great service and work, thorough, upfront and decently priced.
S
, 11/01/2021

Recently, my vehicles check engine indicator light appeared on my dash. I called and spoke to Brant who most helpful in scheduling a convenient appointment for me and repaired my vehicle in the time that I requested. I have used Roche Automotive service for a number of years and have always been satisfied with the service of my vehicle at a reasonable cost and a quick turn around. I highly recommend them.
M
, 10/08/2021

Did a good job
R
, 10/01/2021

The best! Have been going there for years, and thankful to be able to take our cars to someone honest and reliable. Highly recommend.
T
, 10/01/2021

Great customer service. They are always upfront with us and never says something is wrong when it isn't like a lot of other places. Only place I trust to take my vehicles.
M
, 09/30/2021

Great service done on time with a fair price!!!!!!
C
, 09/23/2021

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