A musty smell when the AC kicks on is the classic Longwood complaint, and it usually starts inside the ductwork. Our crews put the whole system under suction with a negative-air machine sealed onto the trunk, then scrub every run out individually.
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The six services Longwood homeowners call us for most - from a full trunk-to-register cleaning to sealing the attic leaks that bleed cooled air. Everything on this page is air duct in Longwood, FL — the work, the local conditions and the coverage.
Cleaning & Care
Air Duct Cleaning
Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each run is scrubbed individually, so years of dust and debris travel one way only — out of the ducts and into the machine. The visit also checks the registers and returns, where Florida dust shows itself fastest. It is why air duct cleaning in Longwood, FL keeps getting recommended to neighbors.
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Cleaning & Care
Air Duct Inspection
For a Longwood home that sat shut all season, the inspection shows exactly what settled inside before the AC starts blowing it around. A camera goes inside your ductwork so you can see exactly what's in there — buildup, damage or blockages — before we recommend anything. Inspections are free. That is air duct inspection in Longwood, FL, done the way it should be.
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Repair
Air Duct Repair
Crushed, torn or disconnected ducts leak the air you pay to heat and cool. If storm season loosened connections overhead, we document the damage on camera before any repair work starts. We repair and rebuild damaged sections so airflow is strong and even again. When neighbors talk about air duct repair in Longwood, FL, this is the visit they mean.
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Install & Replace
Air Duct Installation
New duct runs for additions, remodels and system upgrades — sized, sealed and balanced so every room gets its share of heating and cooling. In Seminole County, we strap and support flex runs properly, so the sags and kinks that choke airflow never form. Air Duct Installation in Longwood, FL runs on one standard: done properly, checked, and shown to you before we leave.
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Repair
Air Duct Sealing
Leaky joints quietly waste a big share of your airflow. We seal seams and connections with professional mastic for a tighter, more efficient system. In Seminole County, a sealed system holds temperature evenly, so the warm-room complaint usually fades with the leaks. That is air duct sealing in Longwood, FL, done the way it should be.
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Cleaning & Care
Commercial Air Duct Cleaning
Offices, restaurants, retail and multi-unit buildings across Longwood — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. The same negative-air method scales up: one machine sealed onto the trunk, every run cleaned individually, no shortcuts on bigger systems. It is why commercial air duct cleaning in Longwood, FL keeps getting recommended to neighbors.
Get a free estimateNeed something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 air duct specialties. Call (888) 258-5005 and describe it.
A duct system in Longwood is not fighting cold - it is fighting humidity, attic heat and an air conditioner that runs most of the year. This is what we actually find here, and what we check on every visit.
In Longwood, cooling season stretches across most of the calendar, so the blower pushes air through the ducts month after month without a break. Whatever collects inside the ductwork - dust, pollen, pet dander - keeps recirculating the whole time, and the system never gets the idle months that let other climates air out.
Warm, damp air is the Florida constant, and the inside of a duct system in Longwood stays humid even when the house feels dry. Dust sitting in that moisture is what produces the musty, stale smell homeowners notice every time the air handler starts.
Flexible duct is everywhere in Florida construction, and where it was strapped loosely it sags between supports or kinks at turns. A sagging run traps dust and condensate, and a kinked one starves the room at the end of it, so that bedroom never cools like the rest of the house.
When joints separate and seals fail, a Longwood system can lose a serious share of its cooled air into the attic. The air conditioner runs longer to hold the same temperature, rooms drift uneven and the duct system - not the AC unit - is usually the part that needs the work.
Longwood sits in Seminole County, and the ZIP list at the bottom of this page covers 2 serviceable ZIP codes — 32750 through 32779. The closest served neighbors are Altamonte Springs, Lake Mary, Casselberry, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-5005.
Same-day service, free estimates, licensed & insured — and a air duct that lights when you click the remote.
For most Longwood homes, every few years is a sensible rhythm - sooner if you have pets, allergy sufferers, a recent remodel or a home that sat shut for a season. The honest answer comes from a camera inspection: we show you the inside of your own ducts free, and if they are clean, we say so.
They can contribute. Longwood pollen, dust and dander collect in return runs and get redistributed every cooling cycle. Cleaning the system removes that reservoir. It is not a medical fix, but most families notice the house dusts more slowly and the air smells fresher afterward.
Usually the run feeding it: a kinked or sagging flex duct, a joint that pulled loose, or a long run losing cooled air through leaks on the way. In Seminole County attics we find all three regularly. An inspection traces the run end to end, and repair or sealing restores the airflow.
Rooms that never reach temperature, dust that returns days after cleaning, an attic that feels cool when you open the hatch, and cooling bills creeping up season over season. In Longwood homes, failed tape and separated joints are the usual culprits, and professional mastic sealing is the lasting fix.
Cleaning mainly improves air quality and airflow. Where bills drop in Longwood homes is usually sealing: stopping cooled air from leaking into the attic means the AC runs less to hold temperature. We check for leaks as part of every inspection and tell you plainly which work would actually pay off.
No — and be wary of anyone who does. Every duct system is a different size and condition, so a phone price is a guess that changes at your door. Our inspections and estimates are free: a tech looks inside your actual ductwork first, then gives you one clear price before any work starts.
Air Duct Service Co is a national company with local technicians serving Longwood street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of Florida is covered from our Florida page. The Longwood list below covers 2 ZIP codes, 32750 through 32779.
Don't see your ZIP? Longwood also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-5005 and we will confirm coverage for your street address on the call.
Also serving nearby: Altamonte Springs, FL · Lake Mary, FL · Casselberry, FL · Eatonville, FL · Maitland, FL · Winter Springs, FL.
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