Welcome to Knox Heating & Cooling in Wentzville, MO

"We are the company you keep!"

Quality HVAC Services

Reliable, efficient, and knowledgeable heating and cooling solutions for Wentzville, MO and surrounding areas.

Expert HVAC Installations

Trust us to provide top-quality HVAC installations that will keep your home comfortable all year round.

Learn About Our Business

Knox Heating & Cooling is a licensed, bonded & insured HVAC company located in Wentzville, MO.

Discover our Comprehensive HVAC Services

At Knox Heating & Cooling, we offer a wide range of HVAC services to keep your home comfortable and efficient.

HVAC Installations

From new construction to replacement, our team can handle all your HVAC installation needs with efficiency and expertise.

HVAC Maintenance

Regular maintenance is key to keeping your HVAC system running smoothly and preventing costly breakdowns.

HVAC Repairs

Whether it’s a simple fix or a major repair, our team is equipped to handle all your HVAC repair needs.

IAQ

Improve indoor air quality with our solutions. Air purifiers to UV lights available for healthier air.

Get a Free Quote on HVAC Services Today!

Don’t hesitate to get in touch with us for a free quote on our HVAC services.

See Our Impact

Providing exceptional HVAC services to our satisfied customers and completing successful projects we’re proud of is what we do best.

Customers Served

3,000+

Years of Experience

15+

Projects Completed

500+

Satisfied Clients

98%

Happy Customer Testimonials

Take a look at what our satisfied customers have to say about our reliable and professional HVAC services.

Very glad I came across these folks. Fair pricing and fast service, knowledgeable and polite staff.

Lee

Excellent customer service and quick response time, professional, reliable/dependable, competitive pricing, quality work. We’ll definitely call on Jon and his crew again in the future!

Jennifer Lee

We recently had Knox Heating & Cooling install a new HVAC system in our home. The team was professional and efficient, and we are extremely happy with the results!

Laura Brown

Trusted Brands

Get a Free Quote on HVAC Services Today!

Don’t hesitate to get in touch with us for a free quote on our HVAC services.

Frequently Asked Questions

Frequently Asked Questions

  • What are the top HVAC services offered by Knox Heating & Cooling?

Knox Heating & Cooling specializes in HVAC installs, services, and maintenance, making us a one-stop-shop for all your HVAC needs.

  • Is Knox Heating & Cooling licensed, bonded, and insured?

Yes, we are fully licensed, bonded, and insured in both St Charles County and St Louis County for your peace of mind.

  • How can I contact Knox Heating & Cooling?

You can reach us by phone at 6366346693 or via email at [email protected].

  • Where is Knox Heating & Cooling located?

We are located in Wentzville, MO, but we proudly serve the surrounding areas as well.

Area’s We Serve:

St. Louis County

Ballwin, Missouri
Black Jack, Missouri
Breckenridge Hills, Missouri
Brentwood, Missouri
Bridgeton, Missouri
Chesterfield, Missouri
Creve Coeur, Missouri
Des Peres, Missouri
Ellisville, Missouri
Eureka, Missouri
Fenton, Missouri
Frontenac, Missouri
Glendale, Missouri
Kirkwood, Missouri
Ladue, Missouri
Manchester, Missouri
Maplewood, Missouri
Maryland Heights, Missouri
Overland, Missouri
Pacific, Missouri
Richmond Heights, Missouri
St. Ann, Missouri
Shrewsbury, Missouri
Sunset Hills, Missouri
Town and Country, Missouri
Webster Groves, Missouri
Wildwood, Missouri

Lincoln County

Troy, Missouri

Foley, Missouri

Hawk Point, Missouri

Moscow Mills, Missouri

Old Monroe, Missouri

Silex, Missouri

Elsberry, Missouri

Winfield, Missouri

Warren County

Foristell, Missouri
Marthasville, Missouri
Truesdale, Missouri
Warrenton, Missouri
Wright City, Missouri