DNA Heating and Air Conditioning

DNA Heating and Air Conditioning has been serving Chicago homeowners since 2023,operational under Illinois HVAC license #104-018234. Based in the Lincoln Park neighborhood at 2331 N Clark St,the company operates primarily across Chicagos North Side and Loop districts,with recent expansion into Evanston and Skokie.Their two-person NATE-certified team provides residential boiler repair,furnace installation,and seasonal maintenance calls.

DNA Heating and Air Conditioning maintains factory-authorized certifications with major equipment manufacturers,enabling warranty-backed installations for leading brands including Carrier,Bryant,and American Standard.This credentialing allows the company to source parts through distributor networks that smaller independents cannot access,potentially reducing longer-term repair costs for customers.Seasonal preventive maintenance agreements are marketed to existing service clients.

Multiple reviewers on Nextdoor and Yelp highlight technician Marco,who arrived within four hours of an evening emergency call during the February polar vortex.A second account describes Marcos diagnostic work on a 22-year-old Trane system that multiple competitors had misdiagnosed,a repair that preserved the original infrastructure rather than recommending full replacement.Local neighborhood forums note reasonable diagnostic fees compared to adjacent contractors.