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
Knox Heating & Cooling specializes in HVAC installs, services, and maintenance, making us a one-stop-shop for all your HVAC needs.
Yes, we are fully licensed, bonded, and insured in both St Charles County and St Louis County for your peace of mind.
You can reach us by phone at 6366346693 or via email at [email protected].
We are located in Wentzville, MO, but we proudly serve the surrounding areas as well.
Area’s We Serve:
St. Charles County
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