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About C-N-O Comfort Zone

With more than 100 years in the field, Lennox has always offered industry-leading innovation and technology while upholding stringent durability and reliability standards. The specialists at C-N-O Comfort Zone help bring those standards to Saint Peters so that you can always maintain whole home comfort. If you’re looking for a new HVAC system or even if you just have a question about what we carry, give us a ring at 636-578-1777 or set up an appointment with us online. We’d love to hear from you. 

C-N-O Comfort Zone
1124 Carrington Dr
Saint Peters, MO 63376

Phone: 636-578-1777
Email: cnocomfortzone@gmail.com