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    St. Charles’ Top AC Contractor

    Scott-Lee Heating Company is an AC company that has been serving the residents of St. Charles, MO, since 1978. We’re a veteran-owned and -operated company, and we’ stand behind everything we do in this St. Charles County city. Our company is a Lennox Premier Dealer, and we’ve won the Dave Lennox Award 26 times.

    Our goal is to provide quality work at a fair price. To make it easy to get a project done quickly, we offer guaranteed service within 24 hours. We’re a BBB-accredited business with an A+ rating.

    AC Contractor at Scott-Lee Heating Company

    We’re known for:
    • Having NATE Certified technicians
    • Being fully licensed, bonded, and insured
    • Offering comprehensive services
    • Having flexible appointment availability

    AC Services Offered by Scott-Lee Heating Company

    Dependable St. Charles AC Repairs

    At Scott-Lee Heating Company, we want to be the AC company you turn to in St. Charles whenever your cooling system isn’t working properly. Regardless of the scope of the issue, our technicians will have the skills to diagnose the cause of the problem. They’ll give you an accurate price estimate to go over. We’ll explain any of your options so that you can make an informed decision on how to move forward. We won’t start your repair until you approve our estimate. Your satisfaction is important to us, so we won’t be happy until you are.

    AC Company - HVAC Professionals in St. Charles, MO

    Skilled technicians will:
    • Answer any of your questions
    • Offer sound and clear advice
    • Be meticulous and efficient
    • Behave in a professional manner

    Quality AC Installation Services

    There are many benefits that come with getting a new air conditioning system for your house. At Scott-Lee Heating Company in St. Charles, we can help you to choose the perfect air conditioner for your needs. We’ll remove your old unit carefully and make sure that all waste gets disposed of correctly. As an AC contractor, Scott-Lee Heating Company understands the importance of getting each installation in St. Charles done right the first time. You’ll be shown how to use your new cooling system when we’re done installing it. We’ll also answer all of your questions honestly and clearly.

    Trusted St. Charles AC Maintenance

    Scott-Lee Heating Company makes it easy to schedule annual maintenance for your St. Charles cooling system. During a tune-up, our technicians will clean out the various parts of your air conditioner. They’ll have the training needed to spot any lurking issues. Getting these smaller problems fixed before they grow could end up extending the lifetime of your air conditioner. Our goal is to get your unit running as efficiently as possible so that you can minimize your cooling bills and save money.

    Call Scott-Lee Heating Company today to learn more about our work as an AC contractor serving St. Charles residents.

    Frequently Asked Questions

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    What makes Scott-Lee Heating Company the top AC provider in St. Charles, MO?

    Our NATE-certified technicians deliver fast, reliable installations and maintenance backed by decades of experience serving St. Charles homes and businesses.

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    Which AC brands and models does Scott-Lee support in St. Charles?

    We service and install all leading brands—Carrier, Trane, Lennox, Bryant, and more—to ensure you get the perfect match for your St. Charles home.

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    How do I schedule AC service with Scott-Lee in St. Charles?

    Simply call our St. Charles office or book online—our friendly staff will confirm your preferred date and time, then dispatch a technician promptly.

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    Does Scott-Lee offer 24/7 emergency AC repair in St. Charles?

    Yes—our St. Charles team is on call around the clock for urgent repairs, so you’re never left without cooling when you need it most.

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    What areas around St. Charles does Scott-Lee serve?

    We proudly cover all of St. Charles County—including O’Fallon, Wentzville, Lake St. Louis, and Dardenne Prairie—for installations, repairs, and maintenance.

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    How can a new AC system save me money in St. Charles?

    Modern, high-efficiency units reduce energy consumption—in many cases cutting cooling costs by 15–20% compared to outdated systems.

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    What should I do to prepare for my AC technician’s visit?

    Please clear access around indoor/outdoor units, note any unusual sounds or performance issues, and have your system’s model info handy for our St. Charles team.

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    Are eco-friendly refrigerant options available in St. Charles?

    Yes—Scott-Lee offers EPA-approved, low-GWP refrigerants that reduce environmental impact while maintaining peak cooling performance.

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    What guarantees come with AC services in St. Charles?

    Every installation and repair in St. Charles is backed by our workmanship guarantee and the manufacturer’s warranty—your comfort and satisfaction are assured.

    St. Charles’s Premier AC Company

    Scott Lee Heating brings decades of HVAC expertise to St. Charles, serving homes from historic districts to new-town developments.

    • New Town: Mixed-use installations and maintenance in the lakeside, walkable community.
    • Governor Place: Precision service for upscale subdivisions south of Highway 364.
    • Bellevaux: Quiet mini-split retrofits preserving charming street-front homes.