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CNO Comfort Zone Heating and Cooling logo
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One of the Top Heating and Cooling Companies St Peters, MO, St. Charles County, St. Louis and Surrounding Areas Has to Offer

Same-Day Service Available | Free Estimates | Competitive Pricing

Same-Day Service Available

Free Estimates

Competitive Pricing

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Hours:

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Why CNO Comfort Zone Heating and Cooling Is the Choice for HVAC Services

Same-Day Service

Available

Free Estimates on Installations

Family and

Locally Owned

Up to 10 Year Labor Warranty

Approved Contractor for Spire and Ameren

Competitive

Pricing

Fall Clean and Tune-Up Special
$79.00
$79 for your Fall Clean and Tune-Up. From CNO Comfort Zone Heating and Cooling. Customer must mention the coupon, prior to service.
Use This Coupon
EXPIRED
System Installation
$100 OFF
Get $100 off a complete HVAC system installation ​from CNO Comfort Zone Heating and Cooling. Coupon must be redeemed prior to installation. Customer must mention the coupon, prior to service.
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EXPIRED
Service Call
$25 OFF
Must mention coupon when booking appointment. From CNO Comfort Zone Heating and Cooling. Customer must mention the coupon, prior to service.
Use This Coupon
EXPIRED

The Experience and Expertise for Any HVAC Job

If you are searching for one of the top heating and cooling companies St Peters, MO has to offer, then look no further than CNO Comfort Zone Heating and Cooling. We offer a wide range of services to better serve you and your home. On a hot day, you never want to be without your AC so whether you need a repair or a replacement, we will be there for you. In the winter, you also don’t want to be without heating or hot water. We offer same-day service so that you never have to worry about your home being overly hot or freezing cold. On top of our heating and cooling services, we also offer indoor air quality options, mini-split systems, boiler repair, and more!


Check out our services below! As one of the most respected heating and cooling companies St Peters, MO residents recommend, we’re proud to offer a wide range of high-quality services.


Call us for service at (636) 578-1777.

air conditioner repair

Air Conditioning 

CNO Comfort Zone Heating and Cooling will get cool air flowing through your home in no time. Our technicians will thoroughly troubleshoot your air-conditioning system before diagnosing the problem.

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newly installed furnace

Heater/Furnace Services

Count on our dedicated technicians to go to great lengths to keep you warm and comfortable. Don't trust just anyone to handle your important heating installations or repairs. 

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heat pump

Heat Pumps

Let our experts help you with your installation, maintenance and repair needs. When you choose us, you can be assured that your heat pump is being installed by a trained and certified technician.

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water boiler

Boilers

If your boiler is not providing the heat you need for your home or business, then it is time to call our professionals. We offer a full array of boiler repair services including driveway heat. Get installation of new or repair of old systems.

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water heater

Water Heaters

No matter what type of water heater you have, let our experts keep it maintained. Rely on our professionals to keep your home's access to hot water every day with repairs, rebuilds and new installations. 

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humidifier on living room

Indoor Air Quality

Your home’s air quality can have a big impact on your health. Contact us to have indoor air quality purification and whole-house humidifier systems installed, and enjoy better health and fresh, pure air!

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Contact Us Today

CNO Comfort Zone Heating and Cooling has proudly served St. Peters residents and businesses since 2014. Our goal is to keep you living in your comfort zone, whether you need your HVAC system replaced, your air conditioner repaired, or need maintenance and upkeep.


With over 15 years of experience in the industry as one of the leading heating and cooling companies in St Peters, MO, our highly skilled technicians are trained to handle all your heating and cooling needs, ensuring the job is done correctly the first time. Your home comfort is our main priority.


Here's what our satisfied customers are saying...

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CNO Comfort Zone Heating and Cooling

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