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Our Services

Duncan Heating and Air is a family-owned and operated business that takes pride in every job, no matter the size. We proudly serve Dawsonville, GA, Cumming, GA, Gainesville, GA, Dahlonega, GA, and Alpharetta, GA. Whether you need your current heating and cooling unit serviced or repaired, or you’re looking for a new HVAC system, we are the trusted name you can count on.

Our goal is 100% customer satisfaction. At Duncan, we service all brands and can install any major brand, with a specialization in Trane and Daikin. Our mission is simple: by treating everyone with honesty and respect—just as we would want to be treated—we aim to build strong, long-term relationships with our clients.

Thank you, and may God bless!