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.
Aprilaire Duct Repair & Sealing in Marietta: What to Know First
We provide independent Aprilaire duct repair and sealing in Marietta, with most jobs completed in a single scheduled visit and a written price delivered before any panel comes off. As an independent Aprilaire service provider, we are not affiliated with or authorized by Aprilaire, but we stock OEM and quality aftermarket parts for the model lines most common in Cobb County homes. Our crews carry Aprilaire-compatible mastic sealant, flex-duct repair sleeves, and metal duct patching materials on every truck, so we’re not making a supply run while your system stays offline.
This page is for homeowners in Marietta who own an Aprilaire whole-home dehumidifier, ventilation system, or air cleaner and have been told the ductwork connected to it is leaking, disconnected, or pulling from the wrong zones. If your HVAC contractor said “the ducts are the problem,” we are the ones homeowners near the Marietta Square call next. Call (470) 516-9337 for a free estimate with a written price before work starts.
How Aprilaire Products Fail - and How We Fix Them
- Model 1820/1830 dehumidifier flex-duct collapse at the supply plenum. These compact units, popular in Marietta basements and conditioned crawl spaces since 2018, use a short flex-duct jumper to the main supply plenum (the sheet-metal box that distributes air to your duct runs). The negative pressure from the unit’s blower, combined with Georgia’s high summer humidity, causes the inner liner to delaminate and collapse inward. We’ve replaced dozens of these in East Cobb and the Indian Hills area. Our fix: remove the damaged flex, inspect the plenum collar for corrosion, and install a reinforced flex-duct sleeve with a draw-band connection and mastic sealant rated for dehumidifier duty cycles.
- Model 8126X ventilation controller ductwork imbalance. This whole-home ventilation system relies on dedicated intake and exhaust duct runs that must be balanced within 10 percent airflow. In Marietta’s older ranch homes near Kennesaw Mountain, we regularly find the exhaust duct has separated at a hidden ceiling register, causing the system to pull conditioned air from the wrong rooms and spike energy bills. Our fix: smoke-pencil testing to locate the leak, repair or replace the damaged run, and rebalance the intake/exhaust ratio with a digital manometer.
- Model 5000 electronic air cleaner gasket deterioration on the return-air plenum. The 5000 series mounts between the return plenum and the furnace, and its factory gasket hardens after 6-8 years in Cobb County’s temperature swings. Once the seal fails, unfiltered air bypasses the cleaner entirely, and the gap becomes a debris collection point. Our fix: remove the unit, clean the flange surfaces, and install a new closed-cell foam gasket with a bead of mastic sealant - never the generic tape some competitors use, which fails within two seasons.
- Model 360 through-wall ventilator duct sag in crawl spaces. This single-room unit is common in Marietta’s 1960s-1980s brick ranches with finished basements. The 4-inch flex duct that runs through the wall to the outside often sags where it crosses the crawl space, creating a condensate trap that breeds mold and restricts airflow. Our fix: reroute with proper slope for drainage, replace any water-damaged sections, and seal all joints with UL-181 mastic - not duct tape, which deteriorates in damp crawl spaces within months.
- Model 8910 Home Automation thermostat duct-zone mismatch. When this control system is paired with zoned ductwork in newer Marietta builds, we find dampers that no longer seal properly due to cracked flex-duct connections at the damper box. The thermostat reports “zone fault” but the real problem is physical leakage. Our fix: scope the damper box with a camera, repair the flex-duct connection with a mechanical sleeve and mastic, and verify damper closure with a static-pressure test.
Our Aprilaire Duct Repair & Sealing Process

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Call and schedule. A live person answers, confirms your Aprilaire model if you know it, and books a two-hour arrival window. No “call for a quote” - we will give you a written price on site.
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Arrival and documentation. Our technician, identified by name before arrival, inspects the Aprilaire unit and connected ductwork with a camera scope. The camera showed a 3-inch debris build-up at the first elbow - or in your case, whatever it actually shows. You see the image on the screen before we say a word about what needs to happen.
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Written price, no exceptions. We deliver a written scope and price before any work starts, under Haven Standard Clause 1. This is not an estimate that grows; it is the price for the agreed repair.
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Parts decision: OEM or quality aftermarket. For Aprilaire units under manufacturer warranty, we use OEM parts to preserve coverage. For out-of-warranty systems, we offer quality aftermarket alternatives from Guardsman and Honeywell where they meet or exceed OEM specs. You choose; we document the part numbers either way.
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Repair, seal, and test. We repair the ductwork, seal all joints with mastic or approved tape, and test static pressure and airflow with a digital manometer. The Aprilaire unit must perform to manufacturer airflow spec or we reopen the job.
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Photo record and warranty. You receive before-and-after photos of every duct run we touched, plus the written 365-Day Done Right Promise. The camera doesn’t lie - and neither does the invoice.
Before
AfterWhat Aprilaire Duct Repair & Sealing Costs in Marietta
| Repair Type | Typical Range | What Affects Price |
|---|---|---|
| Flex-duct section replacement (single run) | $280-$420 | Length, accessibility (attic vs. crawl space), whether plenum collar needs replacement |
| Return plenum reseal (Aprilaire 5000 series gasket + mastic) | $340-$490 | Plenum size, corrosion level, whether unit removal is required |
| Whole-system duct sealing with mastic (typical 1,800-2,400 sq ft home) | $1,800-$2,600 | Number of duct runs, accessibility, extent of existing tape failure |
| Ventilation system rebalance (8126X or equivalent) | $420-$680 | Number of imbalanced runs, damper replacement needs |
| Crawl space flex-duct reroute and slope correction (360 series) | $560-$840 | Crawl space height, moisture damage extent, exterior wall penetration condition |
These are whole-system prices, not per-vent teaser rates that balloon once the truck is in your driveway. We also service Lennox, Trane, and Carrier systems with the same upfront pricing structure. Call (470) 516-9337 for an exact quote - estimates are free, and the price we write is the price you pay.
Why Marietta Homeowners Call CleanRun Air Duct Cleaning Marietta for Aprilaire Work

Since 2013, we’ve served over 52,000 homes with a written price before work started and a documented photo record when the crew left. The 365-Day Done Right Promise is backed in writing on every job, not just stated in marketing copy. Haven Standard Clause 3: Verified Crews means our technicians are background-checked, uniformed, and identified by name before arrival - not day-laborers dispatched from a parking lot.
Tomas Reyes, who grew up in the Bronx and picked up his first trade skills at Bronx Community College, has spent well over a decade doing hands-on duct work. He and his crew have become the ones homeowners near the Marietta Square call when the HVAC tech says the ducts are the problem. Our equipment roster includes Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman - professional-grade tools you can look up independently before agreeing to a price.
FAQs
No, if the work is performed with OEM parts and does not alter the unit’s electrical or refrigerant systems. As an independent Aprilaire service provider, we use OEM gaskets, collars, and hardware for any unit still under manufacturer warranty, and we document part numbers so your warranty record stays clean. Call (470) 516-9337 if you need help verifying your warranty status.
Every job concludes with a Documented Photo Record of every duct run we touched, delivered to you as a standard deliverable. We also test static pressure before and after; the numbers either improve or we reopen the work. The camera doesn’t lie - and neither does the invoice.
Repair the ductwork if the Aprilaire unit itself tests to manufacturer airflow and electrical specs; replace the unit only if it has failed internally. We scope the unit and test its blower amp draw before recommending any duct repair, so you’re not throwing good money at ductwork when the real problem is a dying dehumidifier compressor. Call (470) 516-9337 for a free second opinion on any written estimate.
Most single-run repairs or plenum reseals are completed in two to four hours. Whole-system sealing on a typical Marietta home takes a full day. We schedule the job when it fits your calendar, not with artificial urgency.
Yes. We stock common gaskets, collars, and flex-duct fittings for Aprilaire units back to the 1990s, and we source discontinued parts through our trade suppliers when needed. If a part is truly obsolete, we will tell you before any work starts and show you the compatible aftermarket alternative in writing.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Marietta at CleanRun Air Duct Cleaning Marietta, serving Marietta and nearby areas.




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