Business Details
Emergency
services
Expert HVAC Services in Flowery Branch, GA
At Stefan Mechanical, we take pride in delivering professional HVAC services backed by decades of combined experience. Our team specializes in responsive solutions for residential and commercial systems, ensuring long-term reliability and customer satisfaction. With expertise in installation, maintenance, and repairs, we handle emergencies efficiently and prioritize transparent communication. Our commitment to quality extends to recommending trusted brands and utilizing modern tools for on-the-spot fixes. Serving all of Georgia, we combine technical skill with personalized service to meet diverse heating and cooling needs. 
Services
HVAC Installation
Furnace Repair
Air Duct Cleaning
Water Heater Installation
Geothermal Heat Pumps
Insulation Services
Ventilation Systems
Boiler Maintenance
Tankless Water Heaters
Crawl Space Encapsulation
Highlights and features
- We offer 50 years of combined HVAC experience.
- Our team is BPI Certified for technical excellence.
- We provide 24/7 emergency repair availability.
- We service all brands with transparent pricing.
- We guarantee free, no-obligation estimates.
Associations and certifications
- BPI Certified
What people say
Best service
Expertise
Responsive
Honest pricing
Highly recommend
Services
HVAC Installation
We specialize in installing high-efficiency HVAC systems tailored to residential and commercial spaces. Our process includes equipment selection, precise installation, and performance testing. With expertise in geothermal and conventional systems, we ensure optimal comfort and energy savings for every client.
Furnace Repair
Our technicians diagnose and repair all furnace types, including gas, electric, and oil models. We address ignition issues, airflow problems, and efficiency declines using advanced diagnostic tools. Emergency repairs are prioritized to restore warmth quickly during cold weather.
Air Duct Cleaning
We remove contaminants from residential and commercial ductwork using industrial-grade equipment. This improves indoor air quality, system efficiency, and extends HVAC lifespan. Our NADCA-compliant process includes thorough cleaning of vents, registers, and air handling units.
Water Heater Installation
We install tankless, conventional, and solar water heating systems with proper venting and plumbing integration. Our technicians ensure code compliance and optimal placement for efficiency. We also provide tank upgrades and hybrid system options for continuous hot water supply.
Crawl Space Encapsulation
Our encapsulation process seals crawl spaces with vapor barriers and insulation to prevent moisture damage. This includes installing dehumidifiers, sealing vents, and adding drainage solutions. The service improves indoor air quality and protects structural integrity against mold and rot.
Questions
What HVAC services do you offer?
We provide installation, repair, and maintenance for heating, cooling, and ventilation systems including furnaces, air conditioners, heat pumps, and water heaters.
Do you handle emergency HVAC repairs?
Yes, we prioritize emergency calls and often provide same-day service for critical heating or cooling failures.
Are your technicians certified?
Our team holds BPI certification and undergoes regular training on the latest HVAC technologies and best practices.
Do you service all HVAC brands?
We work with all major brands but recommend specific models based on reliability and efficiency ratings.
What areas do you serve?
We service residential and commercial clients throughout the state of Georgia from our Flowery Branch headquarters.
Reviews (3)
John Radu
Aug 12, 2020
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I had Stefan replace an old HVAC system with a new 3 Ton Train system and I thought he was reasonably priced, knowledgeable, and professional. We needed some warranty work after a few months and he came out and took care of the problem for us. He has always offered useful information and advice on HVAC maintenance and has taken care of part replacement for us over the years. We have used his services at our home for about 10 years now and plan to use him for our future HVAC needs.
Frank Bailey El Tigre Fiero
May 24, 2020
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Critical:Quality,Responsiveness
waited for parts for my heat pump for over a year. Stefan told me to find another Trane technician to come out to fix the heat pump.
waited for parts for my heat pump for over a year. Stefan told me to find another Trane technician to come out to fix the heat pump.
Mudcon
Jun 05, 2015
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Called Stefan Friday afternoon by finding him on google. Being told by many others it would be well into next week before they could come out. He asked what time we would be home from work and he would be there that night....and He was.... Had us up and going in no time and my 5 year old unit cooled better than when another company put it in to start with. He has every modern tool for hvac on his truck which makes it easier to fix on the fly. Highly recommend calling him.
