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Best Auto Repair, Alpharetta

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

 23 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 Crabapple 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


what our customers say

Best Mechanic shop in town, honest reliable team, all the crew here are so great and friendly! Great prices!
A
, 02/18/2022

Front brakes changed, these guys did a great job. Truck was ready in 3 hours. Took the time to explain the difference in pads and what would work best for my driving style. First time customer and I will be back. Great rates
E
, 01/12/2022

Thanks guys. I appreciate your honesty and saying you don't need the aliment.
f
, 10/21/2021

If you are looking for somewhere to bring your vehicle to be repaired or worked on, bring it here. I was referred to this shop by friends and the amount of peace they offered is unmeasurable. Tiffany took the time to listen to my concerns, she asked questions, she was patient and made the effort to help me (I was stressed and frantic). The gentlemen that worked on my car were outstanding. I regret not getting both names. One of the techs name was Kyle, I believe. They also took the time to hear why I was there. They understood my concerns with costs (I am a single mom of two) and time restraints. They gave me a full picture on all my repair options AND they set expectations with me. This is somewhere you can bring your vehicle and trust you are not being taken advantage of or nickel and dimed. They gained a lifelong customer. Amazing from start to finish. Can't say enough good things. Thank you!!
B
, 08/20/2021

Mathis has a great team from the front to the techs. Excellent service every time.
E
, 08/19/2021

My Jeep was overheating and they were the closest place but were super full and couldn't get it inside. They didn't want to send me away so they still took the time to look it over outside and spent a good 20 mins in 90 degree heat trying to see what maybe causing it. Ultimately there was an issue with my brand new radiator install and they didn't want to charge me since another place did the install so they got it running good and sent me to the place I had a warranty. Very nice, honest guys. I'll def use them next time!!
J
, 06/21/2021

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