Level 9 Heating and Cooling Logo

Since 1975

60 Month - 0% Interest Financing

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Authorized Dealer of Lennox Systems

HVAC Installations • Contact Us Today
Get Special Offers: Text LEVEL9 to 71441

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Level 9 Heating & Cooling Logo

Professional Commercial & Residential HVAC Services

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Congratulations to our Fall Furnace Winner - Beverly Hoest of Washington, MO

Professional Air Conditioning and Heating Services

Air Conditioning Repair St. Louis Air Conditioning Repair St. Louis

Our team at Level 9 Heating & Cooling offers professional heating and air conditioning services to both home and business owners in the greater St. Louis metro area. Whether it's maintenance, repair, or installation, we're available to assist you right when you need it. Our team is committed to total customer satisfaction and will follow up after we finish to ensure a job well done.

Through the highest quality service and products, Level 9 Heating & keeps your home comfortable, no matter how extreme the St. Louis area weather. Our licensed technicians specialize in the installation, maintenance, and repair of heating and cooling systems, servicing all makes and models, offering free in-home estimates, and 24-hour emergency service.

We Support

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Proud supporter of Anything for a Friend

Our Customers Love Us

Fair prices and financing options.
Gregory J - Washington, MO 63090
always good, as expected.
Judy H - Augusta, MO 63332
Excellent service
Mike B - Defiance, MO 63341

Our Customers Love Us

Adam is super and explains everything he did and any instructions going forward
Linda K - Washington, MO 63090
Great , prompt , communicated and fixed quickly
Ben A - Wildwood, MO 63005

Our Customers Love Us

Chris was great! He explained everything very patiently and didn’t try to sell us anything we didn’t need. Plus, he’s a vet. I love supporting companies that support our vets!
James H - Washington, MO 63090
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Our Service Area

Service area mapService area map

Our team at Level 9 Heating & Cooling is proud to offer our professional HVAC and commercial HVAC services to several communities across the St. Louis area. We know that for many homeowners home comfort is important and ensuring your HVAC system is running properly is the first step. In order to combat this, and to provide more homeowners with a cost-effective solution for repairing or replacing their HVAC units, we cover a wide variety of counties in St. Louis including Franklin, St. Charles, St. Louis, and Warren Counties. Click the button below to check out our service area map and the cities we service.

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What Makes Us The Best A/C and Heating Company in St. Louis

Air Conditioning Repair St. Louis Air Conditioning Repair St. Louis

Today’s homeowners expect more than consistent heating and cooling from their home comfort systems. With rising energy costs and health concerns, consumers demand equipment that tops efficiency ratings, improves indoor air quality, and stands up under brutal workloads. At Level 9 Heating & Cooling, we match your exact needs to the ideal solutions, partnering the most innovative technology on the market with the highest quality workmanship.

For expert installation, service and repair in the St. Louis area call Level 9 Heating & Cooling at 636-251-6936. You’ll always speak to a live representative who will immediately put our extensive resources to work for you, guaranteeing a swift resolution to any difficulties, complete satisfaction and total comfort. When you call us, we’re available when and where you need us!