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Indoor Air Quality Solutions in Greenville, SC

Breathe cleaner, healthier air with professional ductwork repair, air purification, and filtration upgrades.

  • Free second opinions at no cost
  • Fully licensed and insured, SC #117789
  • Financing available on qualifying systems, as low as 0%
  • Background-checked technicians

Serving Greenville, Simpsonville, Mauldin, Greer, Taylors, Spartanburg, Duncan, Fountain Inn, Powdersville, Easley, Travelers Rest, Boiling Springs, Inman, Lyman, Moore, Piedmont, Reidville, Roebuck, Wellford and Woodruff. All service areas

  • Better Business BureauA Rating
  • Locally owned small businessGreenville, SC
  • HVAC Contractor of the YearBusinessRate 2025
First Class Heating & Air technicians standing with the branded service van in a Greenville, SC neighborhood

Schedule your service

Repair, tune-up, or a free in-home estimate. Tell us what you need and we'll get right back to you.

No obligationFree estimatesLicensed #117789

Clear, Flat-Rate Pricing

No surprises, no pressure. You know the price before we start any work.

Free Second Opinions

Not sure about a diagnosis from another company? We'll give you an honest second opinion at no charge.

People First, Always

We treat our customers like family, because that's how we'd want to be treated.

The EPA estimates that indoor air can be two to five times more polluted than outdoor air. In Greenville's climate, where homes remain sealed for both heating and cooling seasons, indoor pollutants like dust, pollen, pet dander, mold spores, and volatile organic compounds (VOCs) accumulate without adequate filtration and ventilation. Poor indoor air quality affects your health, your comfort, and your HVAC system's efficiency.

First Class Heating & Air provides comprehensive indoor air quality solutions for Greenville homes and businesses. Our services include ductwork inspection and sealing, air purification system installation, whole-home humidifiers and dehumidifiers, UV germicidal light systems, and high-efficiency filtration upgrades that capture particles as small as 0.3 microns.

Ductwork problems are one of the most overlooked contributors to poor air quality. The average home loses 20 to 30 percent of its conditioned air through duct leaks, according to ENERGY STAR. These leaks also pull in unfiltered air from attics, crawl spaces, and wall cavities, introducing dust, insulation fibers, and moisture into your living space. Our duct sealing service uses mastic and mechanical fasteners to permanently close these gaps.

Greenville's high pollen counts (the Upstate regularly ranks among the worst in the nation for spring and fall allergies) make air filtration especially important for local homeowners. Upgrading from a basic fiberglass filter to a MERV-11 or MERV-13 media air cleaner captures 85 to 95 percent of airborne particles, dramatically reducing allergy and asthma triggers without restricting airflow to your HVAC system.

Humidity control is another critical component of indoor air quality in the Greenville area. Summer humidity levels often exceed 70%, which encourages mold and dust mite growth. Winter heating can drop indoor humidity below 30%, causing dry skin, irritated sinuses, and static electricity. Whole-home humidifiers and dehumidifiers integrate with your HVAC system to maintain optimal humidity between 40% and 50% year-round.

For homes concerned about bacteria, viruses, and biological contaminants, we install UV germicidal light systems inside your ductwork. These lights use ultraviolet-C radiation to neutralize microorganisms as they pass through the air handler, reducing the biological load in your home's air without chemicals or ozone.

Air Quality equipment by First Class Heating & Air

What We Offer

1Ductwork Repair & Sealing
2Air Purification Systems
3Filter Upgrades
4Humidity Control
5Ventilation Improvements
6Air Quality Testing
7UV Light Systems
8Whole-Home Dehumidifiers

What it costs

Cost depends on the scope of the work and a look at your system. Our pricing page lists what we actually charge for HVAC installation, repair, and maintenance. Estimates on replacements are free.

See the full pricing guide

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Licensed #117789 · Free Estimates · No Overtime Charges

Build Your Clean-Air Plan

Tell us what's bothering you. We'll build the fix.

Pick everything that sounds like your home. We'll match your concerns to the right air-quality solutions and recommend a package built around your needs.

Health & Comfort

Smells & Air

Your Home & System

Select one or more concerns above and your personalized clean-air plan appears here.

Whole-Home Protection

Indoor Air Quality Packages

25%Off when
you bundle

Bad air comes in three phases: the particles you breathe, the germs that grow in your system, and the gases and odors that linger. Each package layers on protection. Mix and match, or step up to whole-home coverage and save.

Controls the 3 phases:Particles & AllergensGerms & BiologicalsGases & Odors
IAQ 1000
Standard
1 Particles2 Germs3 Gases
  • AirRanger Polarized-Media Air Cleaner
  • Time-Release Pan Treatment
  • Germicidal UVC light
  • UVV odor & gas control

A whole-home high-efficiency air cleaner. Captures 97% of particles at 0.3 microns, protects your equipment, and may relieve allergy symptoms.

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IAQ 2000
Deluxe
1 Particles2 Germs3 Gases
  • AirRanger Polarized-Media Air Cleaner
  • BioForce Defender Germicidal UVC
  • Time-Release Pan Treatment
  • UVV odor & gas control

Controls particles and biologicals. Adds a germicidal UVC lamp that inactivates viruses, bacteria and mold continuously, for fewer colds and flu.

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Most Popular
IAQ 3000
Premier
1 Particles2 Germs3 Gases
  • AirRanger Polarized-Media Air Cleaner
  • Active BioForce Defender UVC + UVV
  • Time-Release Pan Treatment
  • 2nd UVC lamp / HEPA upgrade

Whole-home control of all three phases of air pollution. Disinfects and deodorizes your air continuously. Excellent equipment and health protection.

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IAQ 4000
Optimum
1 Particles2 Germs3 Gases+
  • AirRanger Polarized-Media Air Cleaner
  • Dual-Lamp Active BioForce UVC + UVV
  • Hospital-grade Bypass HEPA option
  • Time-Release Pan Treatment

The ultimate. All three phases plus a second germicidal UVC lamp and the option of true hospital-grade HEPA filtration.

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Every package includes a Time-Release Pan Treatment, a lifetime ballast & powerhead warranty, 3-year bulb kits, and professional installation by a licensed First Class technician (#117789). Bundle and save 25% vs. buying individually.

Air Quality FAQ

Common questions about our air quality services in Greenville, SC.

How do I know if my indoor air quality is bad?

Signs of poor indoor air quality include persistent allergies or respiratory issues that improve when you leave the house, musty or stale odors, visible dust buildup despite regular cleaning, excessive humidity or condensation on windows, and visible mold growth. If you notice any of these, a professional air quality assessment can identify the specific problems and recommend targeted solutions.

What is duct sealing and do I need it?

Duct sealing closes gaps, cracks, and disconnections in your ductwork that allow conditioned air to escape and contaminated air to enter. ENERGY STAR estimates that the average home loses 20 to 30 percent of conditioned air through duct leaks. If you have rooms that are hard to heat or cool, high energy bills, or excessive dust, duct sealing can make a significant difference. We test your duct system and show you where the leaks are before recommending repairs.

Are whole-home air purifiers worth the investment?

For Greenville residents, especially those with allergies, asthma, or respiratory conditions, whole-home air purification is one of the most impactful upgrades you can make. Unlike portable units that treat one room, whole-home systems clean all the air passing through your HVAC system. Combined with proper filtration, they can remove over 99% of airborne particles, bacteria, and allergens from your entire home.

How does humidity affect my Greenville home?

Greenville's summers often bring humidity above 70%, which encourages mold growth, dust mite reproduction, and that sticky, uncomfortable feeling. In winter, furnace heating can drop humidity below 30%, causing dry skin, cracked wood, and static. A whole-home dehumidifier or humidifier integrated with your HVAC system maintains ideal 40 to 50% humidity automatically, improving both comfort and health.

How often should ductwork be inspected?

We recommend a professional ductwork inspection every 3 to 5 years, or sooner if you notice increasing energy bills, poor airflow, musty smells, or excessive dust. Homes with ductwork in crawl spaces or attics should be inspected more frequently due to exposure to moisture, pests, and temperature extremes that accelerate deterioration.

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Licensed #117789 · Free estimates · Financing available

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