Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Fast, Reliable Air Duct Repair Across St. Johns
Air duct repair in St. Johns typically runs $280 to $750 for a single duct run replacement, and $900 to $2,200 when multiple ducts on a system need work. Most repairs in St. Johns are completed in a single visit. We know St. Johns well: the slab-on-grade homes in Durbin Crossing, the custom builds on acreage off Longleaf Pine Parkway, and the tight HOA timelines around Cunningham Creek. If your vents are blowing weak, your utility bill jumped, or you hear air hissing in a wall cavity, call (904) 329-7854 and we’ll schedule a real diagnosis, not a guess.
Why Linden Air Duct Jacksonville Is St. Johns’s Preferred Air Duct Repair Company
Marcus Veale leads our repair crews, and he sets a simple rule: every St. Johns job gets a written price before any work begins. No exceptions. We’ve repaired ductwork in enough St. Johns homes to know that the problem behind the vent is rarely what a homeowner expects, which is why we camera-inspect before we quote.
Customers in Fruit Cove and Aberdeen tell us the same thing: they wanted a company that would show them the problem. So our techs photograph every split seam, crushed flex run, and debris-clogged plenum before they touch it. Then the repair pricing is itemized and agreed to in writing. The tech who shows up at your door is background-checked, identity-verified, and photo-badged under the Threshold Standard. Their name and photo arrive before the visit. At the door, you check the badge against the photo. That’s how it works, every time.
If a repair fails within 365 days, we come back and make it right at no charge. Written on every job.
Styles & brands we work with
HVAC Duct Installation in St. Johns
HVAC Duct Installation in St. Johns often means adding or replacing an entire supply run to a room that never conditioned properly, or fitting out a new addition. In a county where so many homes have three separate systems, a single bad install creates a permanent hot or cold room. We handle full branch installs, return air additions, and flex duct retrofits in slab-on-grade and crawlspace foundations alike.
New duct installation in St. Johns typically runs $350 to $900 per run depending on length, diameter, and access. A full system replacement with plenum and return work usually lands between $1,800 and $4,200 for the average large home here. The material and access make the difference, not a mystery multiplier.
Mastic-Sealed, R-8 Standard
We install R-8 flex duct as our default, sealed with mastic at every joint. Tape alone separates within a few seasons in a Florida attic. We also balance each register with a hood meter so one room doesn’t rob airflow from another.
Permit-Ready Installations
If your HOA or county inspector requires documentation for a renovation, we provide a written scope of work and post-install static pressure and airflow readings. St. Johns County has straight building code on this, and documentation has saved more than one homeowner a failed inspection.
Air Duct Replacement in St. Johns
Air Duct Replacement in St. Johns is what happens when a repair won’t hold, usually because age, humidity, or construction neglect has damaged too much of the system. We see this most often in older custom homes off Race Track Road and Roberts Road, where 20-year-old flex duct has collapsed or split in the attic. When replacement is needed, the question is never “can it be patched?” It’s “how much of this run is compromised?”
Replacing a single full duct run in St. Johns lands between $300 and $800. Whole-home duct replacement on a 2,500 to 3,500 square foot house here typically runs $2,800 to $5,500, depending on the number of runs, attic access, and system configuration. That’s the honest range. We will not quote a tiny teaser number and then invoice you three times that once the work starts.
Multi-System Homes Need System-by-System Scoping
Large St. Johns homes with three air handlers should be scoped system by system. A bedroom wing and a bonus room often share a larger handler, while a dedicated unit serves the master suite. We price each system separately so you’re never paying for ductwork in a system that doesn’t need it.
Why One Crushed Run Matters
A single crushed flex duct behind drywall pushes static pressure up across the entire system. That raises the blower motor’s amp draw, runs your electric bill up, and shortens the life of a motor that costs $600 to $1,200 to replace. Replacement is often cheaper than three more years of that strain.
Trusted Brands We Service in St. Johns
We work on ducts connected to every major St. Johns HVAC setup: Trane, Carrier, Lennox, Rheem, Goodman, and the builder-grade units common in Aberdeen and Bartram Park. When repairs call for materials, we stock R-8 flex duct, mastic, dampers, and plenum components for fast turnaround in our St. Johns service area. Where air quality is part of the issue, we install and service filtration equipment from Honeywell and Aprilaire as well as duct sealing and repair products from Nikro and Abatement Technologies. The equipment brands change; bad ductwork is bad ductwork. We fix it with the same parts a manufacturer would supply.
See the difference
Before
After
Before
After
Before
AfterCommon Air Duct Repair Problems We See in St. Johns Homes
- Construction debris in new-build ducts: In Durbin Crossing, Julington Creek Plantation, and nearly every new community along County Road 210, we find drywall dust, paint overspray, and sheetrock scraps inside supply runs. Builders rarely seal off registers during finishing work, and that debris restricts airflow within the first two years of ownership. A young home should not need duct cleaning at year two. In St. Johns, many do.
- Crushed flex duct in long runs: Long supply runs through tight attic spaces in slab-on-grade homes are prone to kinked or crushed sections. We camera-inspect to find the collapse, then replace the run with properly supported R-8 flex.
- Leaky joints in older custom homes: On larger lots off Greenbriar Road and Longleaf Pine, older custom builds have duct joints sealed with aging tape that has long since peeled. Sandy soil and pine pollen get pulled into the system through every gap, raising indoor humidity and triggering mold concern.
- Unbalanced airflow between multiple systems: Three-system homes commonly show uneven static pressure because a return duct has come loose or a damper has failed. The result is one zone that won’t cool. The fix involves measuring, not guessing.
Pricing for Air Duct Repair in St. Johns, FL
Here are the real numbers for St. Johns. A single duct run replacement runs $280 to $750. A repair to a plenum or trunk line runs $450 to $1,100. Whole-system duct replacement in a large St. Johns home lands between $2,800 and $5,500. Air duct camera inspection as part of a repair diagnosis is included with a repair quote; as a standalone diagnostic it runs $125 to $250.
Three things move the price: attic access, the number of systems in the home, and how much of the ductwork is behind finished space. But the price you are quoted is the price you pay, in writing, before the first panel comes off. Call (904) 329-7854 for a free repair estimate.
We Also Serve Cities Near St. Johns
From our metro scheduling office serving Northeast Florida, we send verified techs to Air Duct Repair in St. Johns homes and surrounding communities including Jacksonville, Orange Park, Jacksonville Beach, and Atlantic Beach. If you’re near St. Johns but not inside the boundary, call us. Chances are our crews already work your neighborhood. Our Air Duct Repair team covers the entire St. Johns County corridor.
Serving St. Johns, FL - Our Local Coverage Area
We’re based in the St. Johns 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 Repair in St. Johns
Newer St. Johns homes, particularly those 2,800 square feet and larger in communities like Durbin Crossing, are frequently built with three separate HVAC systems so different zones can run independently. Repair pricing should follow each system, not a single lump sum for the whole house. We scope each air handler’s ductwork separately, so if your bedroom wing needs work but the bonus-room system is fine, you pay only for the bedroom wing. Call (904) 329-7854 and we’ll map out exactly which runs belong to which system before quoting.
You should receive a written quote before work starts, a written description of what was repaired, and photos of the before-and-after condition of the ductwork. We include all three on every job. For larger replacement work, we also hand over static pressure and airflow readings. If an HOA or a future buyer asks what was done to the ducts, you’ll have the paper trail. If a repair fails within 365 days, the written guarantee means we return at no charge.
Yes. Drywall dust and paint overspray inside ducts restrict airflow, and restricted airflow forces the blower motor to work harder every cooling cycle. Over two or three St. Johns summers, that strain shortens the life of a motor that costs several hundred dollars to replace. The debris also holds moisture during the humid months, which is how biological growth starts inside a system in a home that’s only a few years old. If your new home’s vents blow weak or your filter is caked gray, have the ducts inspected. For an exact diagnosis, call (904) 329-7854.
Humidity is the reason we default to properly sealed mastic joints and R-8 insulated flex duct. St. Johns summers push moisture into every unsealed gap, and that moisture condenses inside duct runs where cold air meets attic heat. The result is rust on metal plenums, mold risk on insulation, and higher indoor humidity. Repairing a duct in St. Johns means sealing it against humidity, not just reconnecting it. We also check that every run is insulated to R-8, because anything less sweats in August.
It is. Slab-on-grade homes, which dominate new construction in northern St. Johns, run most ductwork through the attic. That means long flexible runs, high heat exposure, and the crushed-duct failure mode we just described. Crawlspace homes, more common in the older, custom-built properties south of Race Track Road, have shorter metal or flex runs under the floor, but they’re exposed to ground moisture and often show rusted supports and separated joints. The repair technique and materials differ between the two. We handle both, and we’ll tell you which type you have before quoting.
Written by Marcus Veale, Owner at Linden Air Duct Jacksonville, serving St. Johns and surrounding areas since 2004.