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Best Auto Repair, The Pinehurst area


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Specializing in Mercedes-Benz, BMW, Cadillac, Volvo, Audi, Mini, VW, Toyota, Lexus, Infinity, Acura, GM, Ford

  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 AutoWerks, 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

These guys are awesome. Unfortunately I have had to take my Volvo in to them multiple times. They do a great job and don't rip you off. Highly recommended if you want the job done at a decent price. If you want to get ripped off go elsewhere.
J
, 01/27/2021

I used Autowerks for the first time and was very pleased with everything about my visit. I always wary when trying a new car service but Autowerks did great. They properly diagnosed my car and did all the work quickly and at a fair price. Could not ask for anything more.
K
, 10/21/2019

My vehicle is out of dealer warranty, and Autowerks is my preferred Mercedes Benz auto service shop. I have had great service, and no issues on any repairs or service to my vehicle. I would recommend Autowerks.
K
, 12/12/2019

I have had Autowerks service several of cars. They do very good work and are prompt, professional and courteous. I recommend them very highly.
L
, 03/26/2020

I can't believe how fast my car was repaired. I dropped it off and expected to wait but within a few short hours they called me back to come get it. Very impressive and all for a fair price that I'm happy with.
A


No one beats you guys at AutoWerks. I know I've saved a lot by bringing my car here and that the work done is always what is needed. I notice how you treat all your customers with a sense of urgency as well because it never takes long.
V


  • AAA Approved Auto Repair
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