Working Hours
  • Mon 8:00AM - 5:00PM
    Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
    Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
    Sat Closed
  • Sun Closed
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636-441-8121 | 4600 Central School Rd

Cooling and AC Repair

Cooling and AC Repair, Saint Charles, MO

Saint Charles's AC Repair and Cooling System Specialists

The expert mechanics at Kar Tech in Saint Charles know how to help high-performance drivers and engines keep their cool. At Kar Tech we offer AC repair for high-performance cars and trucks including BMW, Audi and Mercedes Benz.

When it comes to cooling, we offer so much more than just air conditioning repair. As high-performance car owners add EFI, superchargers or use alternative fuels, heat builds up in the engine. That can reduce performance and cause high cost auto repairs down the road.

Come to Kar Tech and let us diagnose issues with heat build-up. Every day we install quality high-performance oil coolers, radiators with high flow water pumps and flex fans for driving enthusiasts in Saint Charles. Need a high flow thermostat with a 180-degree open temperature rating so you can get back in the race fast? When it comes to keeping your engine cool on the track or around town, Kar Tech is the name you can trust.


What Our Customers Are Saying

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Always good work and fair prices. I have a Tahoe that I purchased new that now has 340,000 miles, and a bunch of Jeeps with 240,000 miles apiece, I credit Kar Tech for giving me the ability to keep my autos on the road so long.

, 05/19/2020

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Knowledgeable, Efficient, and Honest! Kar Tech diagnosed the problem, called me with an estimate, and completed the repair - at a very reasonable price!! I highly recommend this place!

, 05/19/2020

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Great people who have gone above and beyond to get my truck on the road. Honest and very fair. I couldn't ask for anything to have gone better.

, 05/19/2020

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I have used Kar Tech for the last 10 years with 3 different vehicles. I feel so safe and comfortable taking my car to them. I get honest feedback. The prices are great and the service is awesome. They always get me in quick and are great at explaining everything to me. I appreciate having them as my go-to more than they know. Thank you!

, 05/19/2020

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Nice family owned business who knows what their doing!

, 05/19/2020

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Friendly service and great prices. This has been my only mechanic for 15 years at least and will only go to them!

, 05/19/2020

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An honest mechanic is hard to find, and the folks at Kar-Tech are not only honest but very capable and professional.

, 05/19/2020

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Extremely friendly staff. Fixed everything on my car for a very fair price. I couldn't be more happy. Steve works tirelessly to make sure his customers are very satisfied when they leave.

, 05/19/2020

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Friendly, honest, and reasonable mechanic shop. A rarity. Highly recommended.

, 05/19/2020
  • ASE Master Technician
  • NAPA AutoCare Center
  • IDENTIFIX
  • Jasper
  • MITCHELL 1
  • Draeger
  • Motorcraft
  • Car Care Aware
  • Call Us For Service: 636-441-8121