Sun Prairie AC Repair & Replacement Services

Honest AC Diagnostics Backed by a 3-Year/36,000-Mile Warranty

When your car’s air conditioner stops keeping up, you need a shop that can tell you exactly what’s wrong before asking you to approve anything. At Christian Brothers Automotive Sun Prairie, our ASE-certified technicians use modern diagnostic technologies to find the root of any AC system problem and deliver honest repair advice. We service any make or model, and every repair is backed by the Nice Difference Warranty: 3 years or 36,000 miles, whichever occurs last. That’s not a typo. Many shops cover whichever limit comes first. Ours expires at whichever comes last.

Owner/operator Kris Laukant has run this location for more than 36 years, and that tenure shows in how we treat every vehicle that comes through the door. Before any work begins, we send you a free Digital Vehicle Inspection report with actual photos and videos of what our technicians found. Your service advisor walks you through the findings, and you approve the work directly through the report. No surprises. We’re also proud to have been ranked #1 in Customer Satisfaction Among Aftermarket Full-Service Maintenance and Repair Providers in the J.D. Power 2025 Aftermarket Service Index Study for the sixth consecutive time. For J.D. Power 2025 award information, visit jdpower.com/awards.

Call us today at (608) 390-1067 or reach out online to schedule your AC service in Sun Prairie.

What to Expect With AC Maintenance And Repair Service

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1. Schedule Your Appointment

Whether scheduling online or over the phone be sure and let us know what you're experiencing so we can provide fast and accurate service advice.

2. Diagnostics and Inspections

Drop off your vehicle and the shop will get to work with inspections and diagnostics using the same equipment as the manufacturers to determine issues and next steps.

3. Digital Vehicle Inspection Report and Estimate

Following the diagnosis we will text you a digital vehicle inspection report, containing pictures and videos of our findings and recommendations.

4. Review and Approval

A service advisor will reach out to walk you through the findings and recommendations to determine how you would like to proceed, or you can approve work directly in your DVI.

5. Work Performed or Scheduled

Most work can be completed immediately, or scheduled based on parts and customer availability.

Call For a Quote
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To get rid of foul odors in your car - try using dryer sheets in your vehicle's interior. Lay out a few sheets overnight on or near the source of the smell.

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car cooling system

Vehicle Air Conditioner Problems

AC systems can malfunction for a number of reasons. Some of them include:

  • Leaky or clogged condenser
  • Inaccurate refrigerant level
  • Refrigerant contamination
  • Unresponsive pressure switches
  • Damaged compressor
  • Clutch problem
  • Belt is blown
  • Dusty, debris-ridden filters
  • The AC system has leaks
  • Control head malfunctions

Diminished cooling is often a sign of low refrigerant, but it’s rarely the whole story. Our technicians can diagnose whatever else may be going on and offer reliable, cost-effective solutions for the full picture.

We don’t recommend recharging your AC with DIY cans from the store. Adding refrigerant incorrectly or unnecessarily can cause irreparable damage to your AC system.

Signs Your AC System Is Struggling

An AC problem in a vehicle can be detected by the following signs:

  • Unusual sounds from the vents or under the hood when the AC is running.
  • An unpleasant smell from your vents often points to bacteria buildup in the evaporator. It could be more than thrown-out fast food or gym clothes.
  • Inconsistent air temperatures from your vents may indicate a compressor problem.

What to Expect When You Bring Your Vehicle In for AC Service

We handle AC recharges, refrigerant replacement, dirty air filter cleaning, leaky tube repair, and broken condenser repair for any make or model. Our technicians document everything through the free Digital Vehicle Inspection, sending you actual photos and videos of their findings before any work begins. You review the report with your service advisor and approve what you want done. Once repairs are complete, they’re covered by the Nice Difference Warranty: 3 years or 36,000 miles, whichever occurs last, honored at every Christian Brothers Automotive location nationwide. We also offer a free shuttle so you can carry on with your day while your vehicle is being serviced.

Need your AC serviced in Sun Prairie? Call us at (608) 390-1067 or schedule an appointment online.

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Your Local Christian Brothers Amenities

Courtesy Inspections
Certified Technicians
Free Shuttle Service
Free Wifi

FAQs

  • Q. "Why won't my A/C blow cold air?"
    If you notice any fluid under your car it may be due to a leak within your A/C system. However, issues can range from the fan not working properly to needing a recharge. Click here to find out all the potential reasons your vehicle's A/C is not working properly.
  • Q. "Can I Recharge A Failing AC Myself?"
    It is possible if you have the proper knowledge and equipment, however, you may want to turn to a professional to avoid damage to your system. Click here to learn more about the dangers of at-home vehicle A/C recharges.
  • Q. "How Does Outside Heat Affect My AC?"
    The hotter it is outside, the harder the air conditioning in your vehicle has to work. Rising outside temperatures put extra strain on your entire vehicle and its cooling system, from the battery and belts to hoses and fluids, requiring each part to work overtime to keep your vehicle cool. The result of extreme spikes in temperatures may even require you to replace your air filter sooner, along with other various components that ensure your car’s cabin remains comfortable. Click here to learn more about what you can do to protect your car's A/C in the heat.
  • Q. "Warning signs my AC needs service?"
    Warning signs your AC needs maintenance includes a foul odor, noticeable airflow change, change in cooling, and loud noises when AC is on. Click here to learn more about Common Air Conditioning Problems & Solutions.
  • Q. "Do you offer a warranty?"
    As part of our Nice difference.® commitment to providing our customers the best auto service experience possible, we also offer a3-year/36,000-mile warranty on all the work that we do. We offer this warranty at every Christian Brothers Automotive nationwide, and it will be honored at any location, regardless of which branch did the initial work.
  • Q. "What is a Digital Vehicle Inspection?"
    With a complimentary Digital Vehicle Inspection (DVI) on every visit, you’ll see firsthand photos of your vehicle from under the hood. We’ll let you know if everything is functioning properly or if there are any areas of concern. You can even approve or deny our service recommendations, all straight from your smartphone, or you can, of course, give us a call and we’ll explain our findings in further detail.

Have more Questions?

Our friendly auto service experts have the answers.

Call your local Christian Brothers Automotive car shop today

Hear What Our Customers Had to Say About Us

  • "Great guest service once again. Nathon and Scott are awesome. They treat you with respect and honesty. Also like an old friend."

    - Great service

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