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Best Auto Repair, Roswell

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Your Local Japanese Vehicle Specialist

Experts in Toyota, Lexus, Honda, Acura, Nissan, and Infinity

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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 Meco 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

My family has been using Meco Automotive for 10+ years. Mark is very honest and reasonable. Thanks for making car maintenance easy.
J

I trust Mark. That's the most important thing. Yes, he's efficient and great at his job but, most importantly, he has earned my trust. I know he's going to take great care of my car, my time, and my wallet. One of my favorite moments in the time I've been going to him is when he would not repair my car anymore, he would not let me waste any more money on it. He could've made a buck - quite a few actually - but that's not in his character. He then helped advise me on my next car. Highly recommend.
B

Mark and his team are professional, knowledgeable, friendly, and reasonable. They always take good care of us and get our cars in and looked at in a timely fashion. Highly recommend them!
C

They are always so nice and accommodating. I never feel like they are trying to pull one over on me... I trust these guys, and their work is great!
M

I will NEVER go anywhere else for service! Mark has helped to keep my Toyota Sienna Minivan running for over 200,000 miles....and it is still going strong! He will now be servicing our recently purchased previously owned Highlander. During a pre-purchase inspection, he found some issues that the dealership didn't disclose (such as a previous accident and bad shocks). I was able to use his findings to go back to the dealership and have them fix the problems! He is so honest.....I will never get go anywhere else.
C

Excellent work (and fast too!), good price, best service I have had in quite awhile! I will definitely use them again.
J

  • ASE (Automotive Service Excellence)
  • Valvoline
  • Car Care Aware
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