At Duncan Heating and Air Services, we pride ourselves on being a family-owned and operated business that takes pride in every job we do, no matter the size. We are committed to providing exceptional service to our customers in Dawsonville, GA, Cumming, GA, Gainesville, GA, Dahlonega, GA, and Alpharetta, GA. Our mission is simple: we believe that by treating everyone with honesty and respect, we will build strong, long-term relationships with our clients.
Our Services
At Duncan Heating and Air Services, we offer a wide range of services to meet all your heating and cooling needs. Whether you need your current heating and cooling unit serviced or repaired, or you're looking for a new HVAC unit, we're here to help. Our experienced technicians are trained to service all major brands of heating and air conditioning equipment, including Trane and Daikin.
Preventative Maintenance
Regular maintenance is essential to keep your heating and cooling system running efficiently and to prevent costly repairs. At Duncan Heating and Air Services, we offer options to come twice yearly in the spring and fall to check your system and ensure it's running at its peak performance. In between those checkups, there are three key steps you can take to prolong the life of your unit and help it run efficiently:
- Replace your filter every 30 days (every 15 days if you have animals)
- Pour two capfuls of bleach into the drain line every month during the cooling season to prevent water leaks and system shutdowns
- Use a water hose to rinse out the coil on your outdoor unit every few months
Air Conditioner Repair
At Duncan Heating and Air Services, we offer air conditioner repair services in Dawsonville, GA, Gainesville, GA, Cumming, GA, and Dahlonega, GA. Our experienced technicians are trained to diagnose and repair a wide range of issues with your air conditioning system. Whether you're experiencing issues with your air conditioning unit, we're here to help.
Why Choose Us
At Duncan Heating and Air Services, we're dedicated to providing exceptional service and building strong, long-term relationships with our clients. We're a family-owned and operated business that takes pride in every job we do, no matter the size. Whether you need your current heating and cooling unit serviced or repaired, or you're looking for a new HVAC unit, we're here to help.
Our Hours
Our office is located at 147 War Hill Park Road, Suite #300, Dawsonville, GA 30534, and our hours of operation are Monday through Friday from 8:00am to 5:00pm. We're closed on Saturdays and Sundays.
Excellent Customer Service
The reviews highlight the exceptional customer service provided by Duncan Heating and Air. Customers praise the company's prompt response, friendly and knowledgeable technicians, and transparent communication. Many reviewers appreciated the company's willingness to listen to their needs and provide solutions that met their budgets and circumstances.
Professionalism and Trustworthiness
The reviews also emphasize the professionalism and trustworthiness of the company. Customers trust Duncan Heating and Air to provide honest assessments and necessary repairs without trying to sell them unnecessary services or products.
Quick and Efficient Service
The company's quick and efficient service is another aspect that stands out. Many reviewers were impressed with the speed at which their issues were resolved, often on the same day or within a short notice.
Highly Recommended
Overall, the reviews highly recommend Duncan Heating and Air for their exceptional customer service, professionalism, and efficient service.

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