Air balancing
Calibrated airflow measurement to get conditioned air where it belongs, room by room.
Longs, SC · Serving the Grand Strand
Know what you're breathing. Measured, not guessed.
Diagnostic-first indoor air quality and specialty ventilation services. We test, measure, and advise — and we never sell equipment, so our findings have no conflict of interest.
- EPA 608 Universal certified
- Equipment-agnostic
- Instrument-verified
Why diagnostic-only
Unbiased answers, because we have nothing to sell you.
No equipment sales
Traditional contractors earn by replacing systems. We don't. You get data-driven assessments with no conflict of interest.
Instrument-verified
Every recommendation is backed by calibrated measurements — not a sales pitch or a hunch.
Clear referrals
We handle diagnostics, testing, cleaning, and advisory. Any mechanical work is referred to licensed HVAC contractors.
Services
Building-performance rigor for homes and businesses
Specialty duct cleaning
NADCA-aligned cleaning with before-and-after photo documentation.
Moisture & ventilation diagnostics
Thermal imaging and hygrometer readings to find humidity and ventilation problems at the source.
Full IAQ assessments
PM2.5/PM10, CO₂, VOCs, and humidity measured and explained in a clear report.
Commercial IAQ maintenance
Ongoing maintenance agreements to keep your building's air quality verified over time.
Blower door & duct leakage testing Coming soon
For builders, energy auditors, and real estate professionals.
How it works
Four steps. Zero guesswork.
- 1
Test
On-site inspection of your space, airflow, and ventilation.
- 2
Measure
Calibrated instruments capture particulates, CO₂, VOCs, humidity, and airflow.
- 3
Report
Transparent results with readings and photo documentation.
- 4
Advise
Unbiased recommendations — and referrals to licensed contractors when needed.
Who we serve
Built for the Grand Strand
Homeowners
Comfort, health, and answers you can trust before spending on equipment.
Short-term rental owners & property managers
Coastal humidity is relentless. Catch moisture and air issues before guests do.
Businesses
Verified indoor air for employees and customers, with ongoing maintenance options.
Builders & real estate pros
Independent diagnostics now; blower door and duct leakage testing coming soon.
About the founder
Justin Sergent
Justin is an EPA 608 Universal certified HVAC professional with seven years of field experience. He founded Sergent Air to bring science-based, equipment-agnostic air quality diagnostics to the Grand Strand.
“To bring diagnostic-grade air quality science to every home and business in the Grand Strand — delivering transparent, instrument-verified assessments that protect health, improve comfort, and build lasting community trust — one breath at a time.”
Service area
Based in Longs, SC. Serving the Grand Strand.
We serve homes, rentals, and businesses throughout Horry County, including North Myrtle Beach, Myrtle Beach, and Longs (our home base).
Book an assessment
Let's measure your air.
Tell us about your space and we'll follow up to schedule.
- Phone: (803) 833-6452
- Email: sergentairllc@yahoo.com
- Longs, South Carolina