Where We Work
Proudly serving Union County & Mecklenburg County, NC.
3N1 HVAC is based in Unionville — right in the heart of the communities we serve. We know these roads and these neighborhoods because we live here.
Our Promise
Freereplacement estimates
$69flat diagnostic fee
5-Starrated by homeowners
Licensed& insured technicians
Honest HVAC.
No Surprises.
Fair pricing, non-commissioned techs, and an owner who picks up the phone. Serving Union County & beyond.
Union County, NC
Monroe, NC
Waxhaw, NC
Indian Trail, NC
Stallings, NC
Weddington, NC
Unionville, NC
Marshville, NC
Wingate, NC
Hemby Bridge, NC
Wesley Chapel, NC
Mineral Springs, NC
Lake Park, NC
Mecklenburg County, NC (select areas)
Mint Hill, NC
Matthews, NC
Pineville, NC
South Charlotte, NC
Service Coverage
Union County & SE Mecklenburg County, NC
What We Offer
Full-service HVAC for your home.
Every aspect of residential HVAC service across our coverage area — from emergency repairs to planned system replacements.
Not sure if you're in our service area?
Just call us. We'll let you know right away.
Local. Honest. Skilled.
Free replacement estimates. $69 diagnostics. Non-commissioned technicians. Serving Union County and parts of Mecklenburg County, NC.
(704) 288-5930