The leading provider of high-efficiency heating and cooling home comfort systems in Saint Peters

From our first day, Lennox has been crafting HVAC systems in accordance with the highest standards of quality and innovation. Whether it’s the SunSource® Home Energy System or the first air conditioner with a SEER efficiency rating greater than 25, we’re constantly striving to set the bar higher than ever. Giving you the most comfortable home has always been a main priority for the team at C-N-O Comfort Zone, and we want to help you take your home’s comfort to the next level.

Whether you want to have the greatest efficiency in your neighborhood or you’re just looking for the best heating and cooling upgrade for your budget, we have a system for you. When you go with C-N-O Comfort Zone you know you’re going to get the greatest heating and cooling repair and service provided from the best HVAC contractors in Saint Peters.

It’s no wonder that Lennox has a reputation of quality and efficiency, given its 100+ year existence and history of being on the leading edge of heating and cooling innovation. Feel the difference, with C-N-O Comfort Zone.