About Us

C-N-O Comfort Zone Heating and Cooling has proudly served the Saint Peters residents and businesses since 2014. Our goal is to keep our community living in comfort, whether you need your HVAC system replaced, air conditioner repaired, or have us perform maintenance and upkeep. We are here to help and improve your comfort zone. With over 18 years of experience in the industry, 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. Give us a call today, we are your HVAC experts.