Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Air Duct Cleaning Company in St. Augustine South, FL
Air duct cleaning in St. Augustine South typically runs $350 – $650 for a whole-home system, with most jobs scheduled within a few days of your call. St. Augustine South’s tree-canopied, low-lying setting south of the historic district creates a distinct set of duct problems: oak pollen loads, year-round humidity, and older flex duct systems running through hot attics that trap moisture and encourage mold. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and we dispatch crews to St. Augustine South from our Miami office. Call (361) 326-5060 for a free written estimate.
Why St. Augustine South Homes Are Different
St. Augustine South sits just south of the old city in a pocket of live oaks, marsh edges, and 1970s – 1990s ranch homes built before modern duct codes took hold. Most houses here are single-story CBS or frame construction with original or updated flex duct systems snaking through unconditioned attics. In Florida’s subtropical climate, those attics hit 140°F in July, and the temperature swing between attic and conditioned space creates condensation on duct surfaces. We’ve opened systems in St. Augustine South where the inner liner was black with mold from years of that cycle.
The neighborhood’s elevation and proximity to wetlands add another layer. Homes near the Intracoastal or on elevated crawlspaces pull humid ground air directly into return pathways. After hurricanes or heavy summer storms, we regularly find ducts shifted or disconnected in attics from wind-driven rain and sustained high humidity. That combination of pollen infiltration, moisture load, and older construction means St. Augustine South ductwork fails differently than the tighter, drier systems in inland suburbs like Fruit Cove or Nocatee.
Our Main St. Augustine South Services
St. Augustine South homeowners call us for three jobs, each handled on its own dedicated page with St. Augustine South-specific pricing and conditions.
Air Duct Cleaning in St. Augustine South
We clean supply and return ductwork with a Rotobrush rotary brush system that scrubs the interior walls, paired with a Nikro negative-air machine to pull dislodged debris out of your home entirely. In St. Augustine South, this matters more than in newer areas because older flex duct has corrugated walls that trap pollen and mold spores. We also inspect for attic moisture damage while we’re in the system, something we find here more often than in inland neighborhoods. Air Duct Cleaning in St. Augustine South

Dryer Vent Cleaning in St. Augustine South
Dryer vent blockages in St. Augustine South often involve lint packed with oak pollen and humidity-caked debris, not just dry lint. We run a rotary brush through the full vent run to the exterior cap and check back-pressure with a manometer. Homes with longer vent runs through hot attics are especially prone to condensation buildup that hardens lint into dense plugs. Dryer Vent Cleaning in St. Augustine South

Duct Sealing in St. Augustine South
We seal leaking duct joints with mastic and mechanical fasteners, then test with a duct blaster to verify results. In St. Augustine South, disconnected attic runs and gaps at plenum connections are common after storm seasons, and sealing them can drop cooling bills significantly in these older systems. We also evaluate whether your ductwork has degraded past the point where sealing makes sense. Duct Sealing in St. Augustine South

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in St. Augustine South
We stock parts and filtration products from Honeywell, Aprilaire, and Abatement Technologies for St. Augustine South jobs, and we service all major HVAC brands tied to those duct systems. Most filter upgrades and component replacements ship to our Miami office and arrive within two business days. See our brands for the full list.
Pricing for Air Duct Cleaning Company in St. Augustine South, FL
| Service | Typical range in St. Augustine South |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $650 |
| Whole-home air duct cleaning (two systems) | $550 – $950 |
| Dryer vent cleaning (standard run) | $120 – $200 |
| Dryer vent cleaning (long run or rooftop termination) | $180 – $280 |
| Duct sealing (single system, partial) | $400 – $700 |
| Duct sealing (single system, comprehensive) | $700 – $1,200 |
| Duct blaster test (standalone) | $250 – $350 |
| Mold inhibitor treatment (after cleaning) | $75 – $150 |
Prices in St. Augustine South edge toward the higher end when attics are tight to access, ducts are heavily contaminated with mold, or storm damage has left multiple disconnections to repair. We write the full price on paper before any work starts, and that number does not move at the door.
Neighborhoods We Serve in St. Augustine South
We cover the full St. Augustine South area, from the historic district’s southern edge down through the oak-lined residential streets toward the Intracoastal. Most appointments are scheduled within a few days, with routing coordinated from our Miami office to minimize drive time.
- St. Augustine South proper (core residential)
- Davis Shores (adjacent, similar housing stock)
- Lighthouse Park area
- South Street corridor
- Near the Intracoastal wetlands
Service Area – Cities Near St. Augustine South
Our crews travel throughout Northeast and Central Florida for scheduled duct work. We regularly serve Jacksonville, FL to the north, Orlando, FL and Tampa, FL across the peninsula, and Miami, FL where our dispatch and parts coordination is headquartered. Each job runs under The Garrison Standard, with written pricing and the 365-Day Done Right Promise, regardless of distance.
Serving St. Augustine South, FL - Our Local Coverage Area
We’re based in the St. Augustine South area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning Company in St. Augustine South
Most St. Augustine South appointments are scheduled within 2 – 4 business days. We route crews from our Miami office to minimize travel time, and we confirm your arrival window by text the morning of. Call (361) 326-5060 to check current availability.
Standard air duct cleaning and dryer vent cleaning do not require permits in St. Augustine South. Duct sealing that involves modifying or replacing ductwork may need a St. Johns County building permit; we handle that paperwork when it applies and include any permit costs in your written price.
Some St. Augustine South HOAs require advance notice for any service vehicle visit or exterior access. We carry proof of insurance and background-check documentation for every technician, and we’ll provide whatever paperwork your HOA needs before we arrive. Mention your HOA when you call and we’ll sort it out.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What St. Augustine South Customers Say
"Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W."Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L.




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