Business Details
16 Years
experience
Emergency
services
Trusted HVAC Installation, Repair & Maintenance in Dawsonville, GA
Duncan Heating and Air Services was founded in late 2010 by Raymond and Cathy Duncan, building on a legacy of expertise in HVAC systems. With over 15 years of combined experience, our family-owned business has grown to include Derek, Spencer, and Cole Duncan, who personally ensure every job reflects our commitment to quality and integrity. We take pride in treating every client as family, offering honest recommendations and transparent service that prioritizes long-term relationships over short-term gains. Our team extends beyond immediate family to dedicated professionals who share our values, enabling us to deliver reliable HVAC solutions across North Georgia.We specialize in installation, repair, and maintenance of all major brands, with a focus on Trane and Daikin systems, while maintaining rigorous standards for energy efficiency and customer satisfaction. Backed by our 100% satisfaction guarantee, we operate with the understanding that trust is earned through consistent performance and ethical practices.
Services
Air Conditioning Installation
Air Conditioner Repair
Duct Work Installation
Furnace Inspection
Preventive Maintenance
Duct Repair
Details
- Year established: 2010
Highlights and features
- Family-owned business with 15+ years combined HVAC experience
- Serving North Georgia communities including Dawsonville and Gainesville
- Offering equipment financing options for HVAC replacements
- 100% satisfaction guarantee on all installations and repairs
- Certified technicians with expertise in Trane and Daikin systems
What people say
Fast response
Knowledgeable service
Fair pricing
Family-owned business
Services
Air Conditioning Installation
We specialize in selecting and installing energy-efficient air conditioning systems tailored to your home's specific needs. Our experts analyze your space to determine optimal SEER ratings and system sizing while ensuring proper duct integration. All installations follow manufacturer specifications to maximize performance and longevity, with available financing options to accommodate budget considerations.
Air Conditioner Repair
Our certified technicians diagnose and resolve cooling system malfunctions without unnecessary part replacements. We perform comprehensive diagnostics to identify refrigerant leaks, compressor issues, or electrical problems while maintaining system efficiency. Emergency repair services address urgent cooling failures during operational hours, with transparent pricing and repair explanations provided before any work begins.
Duct Work Installation
We design and install properly sized duct systems that maintain airflow efficiency throughout residential properties. This includes insulation upgrades to R-6 standards in unconditioned spaces while sealing all connections with mastic or metal tape. Our installations incorporate new air filters and post-installation airflow verification to ensure optimal HVAC performance and indoor air quality.
Furnace Inspection
Our preventive furnace maintenance checks thermostat functionality, blower motor operation, and heat exchanger integrity during seasonal transitions. We clean critical components like flame sensors and inducer assemblies while verifying gas valve operation and safety controls. Regular inspections reduce emergency repair risks while extending equipment lifespan and maintaining safety compliance.
Preventive Maintenance
Our Comfort Program provides biannual HVAC system evaluations that include electrical connection checks, component cleaning, and operational testing. Fall inspections cover heat exchanger integrity and burner assembly function, while spring visits assess compressor performance and condensate systems. This proactive approach maintains manufacturer warranty validity, reduces energy costs by up to 30%, and prevents unexpected system failures through early issue detection.
People
Cole Duncan
Owner
Cole Duncan leads daily operations while upholding family values of integrity and customer service. With 15 years in HVAC systems, he oversees technical training and quality control, personally handling complex diagnostics. Cole's commitment to professional standards and community trust drives the company's growth and reputation as a local industry leader.
Questions
What areas do you serve?
We provide HVAC services in Dawsonville, Cumming, Gainesville, Dahlonega, Alpharetta, and Johns Creek - covering all North Georgia heating and cooling needs.
Do you offer emergency repairs?
Yes, we handle urgent HVAC failures during regular business hours but maintain standard operating times Monday-Friday 8AM-5PM.
How do I decide between repair and replacement?
Our technicians perform comprehensive diagnostics, then explain repair costs versus energy savings from new SEER 14+ systems before making recommendations.
Are financing options available?
Yes, we offer flexible financing programs for qualifying customers to help with major HVAC replacements when needed.
What maintenance do you recommend?
Biannual inspections in spring and fall ensure optimal performance, including electrical checks, component cleaning, and efficiency testing for both heating and cooling cycles.
Reviews (5)
Julia Johnson
Nov 07, 2021
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I am very happy with my clean ducts! The men who cleaned them were right on time, answered all of my questions, and completed the job quickly. I highly recommend this company.
Heather Hyde
Aug 24, 2021
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Positive:Professionalism,Quality
Cole was extremely professional and helpful. He didnt nickel & dime us. He and his co-worker were extremely nice. We will definitely be using them again in the future!!
Service:AC repair
Cole was extremely professional and helpful. He didnt nickel & dime us. He and his co-worker were extremely nice. We will definitely be using them again in the future!!
Service:AC repair
Melisss T.
Aug 19, 2021
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They fixed my air the end of May, its's acting up again. They scheduled an appointment that I'd have to pay for them to recheck. I had someone at my house waiting they never showed up. Told me we call you didn't answer so we cancelled. I called and told them they didn't say if I didn't answer no one would come, I was told that she thought that was common sense. I'll have a lawyer look into it. I have a grade degree I think I'd have to have common sense. She was very rude
Marguerite Torrenga
Aug 05, 2021
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Extremely friendly and professional service, very fair prices, and excellent quality work! And you couldnt ask for more likable people to be in your home. They went above and beyond to make sure my family (including a new baby) were cool and comfortable. Highly recommend!!
Tyler Davis
Aug 03, 2021
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You can't get any better than Duncan! Family owned and operated. The way they do business shows that they want you as a customer for the long haul. They've been to my house a few times, and could've ripped me off by convincing me to get a new unit for the basement, but instead came up with a plan to keep it going for a few more years. When the time comes to replace, you can bet I'll be calling them.
However, they really earned my appreciation and long term business today. Woke up with the house hot and AC blowing hot air. I felt hesitant calling them on a Sunday, but we were in a jam with indoor
However, they really earned my appreciation and long term business today. Woke up with the house hot and AC blowing hot air. I felt hesitant calling them on a Sunday, but we were in a jam with indoor
