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

Marty's Automotive


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 Marty's Automotive, 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


Reviews

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Best auto repair shop in town; trustworthy, accurate and exceptional customer service. Great place, I reccomend them!!!

, 06/09/2021

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Service was done promptly and now I can ride in a vehicle knowing it's safe. I also appreciate that Marty"s doing a vehicle check to find anything that could be a potential problem. I completely trust taking my vehicle to Marty's for my automotive servicing.

, 04/07/2021

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I was in Illinois visiting people and my van kept overheating in the days before I was to drive back to Florida. I called a AAA recommended garage and they couldn't get me in for a week but the guy at Robinson's said he wouldn't go anywhere other than Marty's. Then a friend of a friend said she had been using Marty's for years. So I called Marty's at 10:30 am, they got me in and diagnosed just after 1:00 pm and completed the repairs by 4:00 pm. I drove 18 hours straight the next morning and my mini-van purred like a kitten with no issues whatsoever. I highly recommend Marty's for their expertise, professionalism and superb customer service. RIP Marty, I hope the shop is in capable hands since Marty's unexpected passing.

, 03/21/2021

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