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.
Aprilaire Duct Sealing & Repair: The West Palm Beach Owner’s Guide
We stock Aprilaire-compatible duct sealing components and repair failing ductwork on Aprilaire systems throughout West Palm Beach, with most jobs running between $275 and $650 installed depending on the access points and how much sealing material the duct runs actually need. The majority of these repairs are completed in a single visit, usually two to three hours on site. Most homeowners discover the problem the same way: a room that never quite cools, a utility bill that climbs in July for no obvious reason, or that faint musty smell coming through the vents right after the AC kicks on.
Which Aprilaire Models This Applies To
The sealing and repair work we do covers Aprilaire’s full residential line: the 5000 and 6000 series air purifiers, the 800 and 700 steam humidifiers, and the E100/E130 dehumidifiers, all of which connect to your home’s existing duct runs. Here’s the compatibility gotcha most people miss: Aprilaire equipment uses standard 6-inch and 8-inch round flex duct collars, but the damper assemblies on the 5000 series are proprietary, meaning a universal aftermarket damper often won’t seat correctly. When we’re replacing or sealing around these units, we match that flange spec exactly rather than forcing a generic part that will leak within a season. You can find your model number on a white label on the unit’s cabinet, typically on the right side panel near the power cord entry. OEM Aprilaire parts are solid, but for duct sealing specifically, we often recommend mastic and foil-backed tape from Hardcast or Nashua because they outperform the factory-supplied foam gaskets in Florida humidity. That said, if the failure is at the unit connection itself, we use the OEM collar or an exact aftermarket equivalent, not something close enough. We also stock replacement collars, dampers, and sealing rings for Lennox, Trane, and Carrier systems on the truck.
Styles & brands we work with
Signs Your Aprilaire Duct Sealing & Repair Is Failing
- Dust accumulation around the Aprilaire unit’s cabinet joints. When the sealing ring or collar has degraded, conditioned air leaks out at the unit connection point, pulling unfiltered attic or closet air back in around the seam. You’ll see a fine gray film settling directly beneath or beside the cabinet, not spread evenly through the room.
- A hissing or whistling sound near the Aprilaire equipment when the blower is running. That’s air escaping through a small gap in the sealing gasket or a joint that’s pulled apart. It’s most obvious in closets or attic spaces where the unit is mounted, and it usually gets louder when the filter is dirty because pressure increases.
- One room in the house never reaches the thermostat setting. If the leak is far enough downstream on a specific branch run, that entire room gets starved of airflow. We see this constantly in Flamingo Park where 1970s-era ductwork has original tape that’s long since crumbled to dust in the attic heat.
- Musty odor that fades when the AC cycles off. A leak on the return side pulls humid, unconditioned air from the attic or wall cavity into the system. In West Palm Beach, that air carries mold spores and damp insulation smell every time the blower runs, then it stops when the system cycles down.
- Higher summer cooling bills than this time last year, with no other explanation. Duct leaks on a central system typically waste 20 to 30 percent of conditioned air. We’ve had Aprilaire owners in El Cid and Southland Park who found their units were running an extra two to three hours per day just to compensate for leakage at the equipment connection.
Replacement Cost & What’s Included
For Aprilaire duct sealing and repair in West Palm Beach, expect $275 to $650 installed, and here’s what drives the spread. Sealing a single equipment connection with new gasket material, mastic, and foil tape runs on the lower end. If we’re also replacing a damaged collar, damper assembly, or a short section of flex duct that’s collapsed, the parts cost adds up, and that’s the difference between a $300 call and one closer to $600. Everything on our truck is commercial-grade from Rotobrush and Nikro, and we write the full price down before any work begins. No per-vent add-ons, no surprise line items at the end. Every repair is covered by our written guarantee, and if the seal fails within the coverage period, we come back and fix it at no charge. That’s the 365-Day Done Right Promise, and it’s printed on every invoice.
See the difference
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After
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After
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AfterDIY or Call Us?
The honest answer: you can diagnose a lot from the return side of your Aprilaire system without touching anything dangerous. Run the blower, walk the visible duct runs in your attic or closet with a flashlight, and look for disconnected joints, crumbling tape, or gaps where the flex duct meets the equipment collar. That’s worth fifteen minutes of your time. But here’s where the work itself goes wrong for most homeowners: flex duct has a wire coil inside, those coils can be sharp, and a duct that pulls apart while you’re working on it exposes you to whatever has been growing inside. Our techs wear gloves and respirators for a reason. The sealing itself requires mastic applied at the right thickness and tape wrapped under the right tension, and if you seal a leak without fixing the underlying sag or disconnected joint, you’ll be back up there in three months. If you’d rather skip the risk and get it done right in one visit, call us at (728) 231-8154.
FAQs
In West Palm Beach’s climate, a properly applied mastic and foil-tape seal on Aprilaire equipment connections should last 10 to 15 years. What fails sooner is the factory foam gasket, which typically dries out and loses compression in four to six years in our attic heat and humidity. We replace those with mastic-based seals whenever we’re in the ductwork, and the improvement in system tightness is measurable, static pressure drops and airflow in the farthest rooms picks up.
In most cases it can be repaired in place, and that’s exactly what we do. The fix is removing the degraded gasket or tape, cleaning the mating surfaces, and applying a mastic seal with foil tape reinforcement. Replacement only makes sense when the collar itself is bent, cracked, or so rusted it won’t hold a new seal, which does happen on older Aprilaire units in beach-adjacent West Palm Beach homes where salt air has been working on the metal for years. If the collar is the problem, we’ll show you before removing anything and explain exactly what the part swap costs.
The vast majority of these repairs take two to three hours from the time we arrive to the time we clean up. That includes a system pressure test before and after the repair so you can see the difference in airflow. Your Aprilaire unit stays powered down for about 90 minutes of that time while the mastic sets.
Yes. We carry OEM Aprilaire collars, damper assemblies, and gasket rings along with commercial-grade mastic and foil-backed tape, and if your system needs a part we don’t have on hand that day, we can typically source it from our local distributor in West Palm Beach within one business day. We never install a universal part on a proprietary flange without telling you first and getting your written approval.
Call Linden Air Duct West Palm Beach
If your Aprilaire system is leaking air and you’re tired of guessing, call us at (728) 231-8154. A real person answers. You’ll get a written price before any work begins, a technician whose name and photo are sent to you before the visit, and a repair that’s backed in writing. That’s the Threshold Standard, and we’ve been holding ourselves to it since 2004.
Written by Marcus Veale, Owner, Linden Air Duct West Palm Beach at Linden Air Duct West Palm Beach, serving West Palm Beach and nearby areas.