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.
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AfterFast, Reliable Duct Repair & Sealing Across Alpharetta
Duct repair and sealing in Alpharetta typically runs $280-$650 for most residential jobs, with flex duct replacement in multi-zone systems climbing toward $900-$1,400 depending on attic accessibility. Our crews are dispatched daily from our Atlanta office to Alpharetta, and we carry the common flex duct sizes, mastic compounds, and metal fittings needed for the large two-story homes that dominate this market. If you’re noticing uneven temperatures between floors, rising cooling bills, or visible debris around your registers, the problem usually starts in ductwork that hasn’t been inspected since the home was built. Call (470) 516-9337 and we’ll put a written price in your hand before any panel comes off.
Why CleanRun Air Duct Cleaning Marietta Is Alpharetta’s Preferred Duct Repair & Sealing Company
We’ve worked in Alpharetta since 2013, and the pattern is consistent: homeowners in subdivisions like Windward, Crooked Creek, and Nesbit Ferry are surprised to learn their 20-30 year old flex duct systems are actively degrading. Our Duct Repair & Sealing team has documented photo records from over 3,200 Alpharetta homes, and the evidence is what converts skeptical buyers into customers who refer their neighbors.
Our reviews from Alpharetta customers consistently cite two things: the before-and-after photo record delivered at job completion, and the written price that never changed once work started. Haven Standard Clause 1 is absolute - no estimate morphs into an invoice. We don’t do “call for a quote” because that phrase is where bait-and-switch begins in this industry.
Dispatch to Alpharetta runs same-day or next-day depending on call volume. Crews are background-checked, uniformed, and identified by name before arrival under Haven Standard Clause 3: Verified Crews. Tomas Reyes, who leads CleanRun, personally reviews any Alpharetta job that involves multi-zone flex duct repair to confirm the scope matches what the camera showed.
Our Duct Repair & Sealing Services in Alpharetta
Duct Sealing
Sealing in Alpharetta addresses a specific problem: the return-air pathways in large two-story homes pull outdoor air through every gap in the duct envelope, and during March through May that outdoor air carries the highest pollen counts in metro Atlanta. We seal plenum connections, register boots, and cross-breaks with mastic sealant rated for Georgia’s humidity cycles, then pressure-test to confirm leakage reduction. A typical duct sealing job in Alpharetta runs $280-$450 for a single-zone system, $480-$650 for multi-zone homes common in 1990s subdivisions.
Flex Duct Repair
Alpharetta’s housing stock is built on flex duct, and flex duct fails in predictable ways after 20-30 years. The inner liner degrades in attics that hit 140-150°F in July. Kinks form where runs were poorly supported across wide attic spans. Connections loosen at the plenum and register boots. We replace damaged sections with new insulated flex duct, support it properly, and photograph every connection. Flex duct repair in Alpharetta typically costs $320-$580 per run, with full system replacement in large homes reaching $900-$1,400.
Metal Duct Repair
Where metal ductwork exists - usually in older sections of Alpharetta near downtown or in custom builds - we repair separated seams, corroded sections, and failed dampers. Metal work requires different tools and materials than flex, and our crews carry both. Metal duct repair in Alpharetta runs $350-$700 depending on accessibility and extent of corrosion.
Duct Insulation
Unconditioned attic runs in Alpharetta lose significant cooling capacity through insulation degradation. We replace failed insulation wraps or apply new closed-cell insulation to metal trunk lines, measuring surface temperature before and after. Duct insulation jobs in Alpharetta typically range $400-$800 for partial systems, $900-$1,500 for full re-insulation in large homes.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in Alpharetta
Our trucks stock fittings and components from Honeywell, Aprilaire, and Abatement Technologies - brands whose specifications we can show you before any work starts. For Alpharetta customers, this means no waiting on parts for common repairs. A flex duct replacement or plenum re-sealing job doesn’t get rescheduled because we didn’t bring the right collar or mastic compound. The equipment roster is part of the written scope you receive before work begins.
Common Duct Repair & Sealing Problems We See in Alpharetta Homes
- Construction debris in newer homes. Even homes built in the 2015-2020 wave around Windward Parkway often have drywall dust, wood chips, and insulation scraps left in supply and return ducts at handover. This material coats blower motors and clogs registers within the first two years of occupancy.
- Flex duct liner shedding in unconditioned attics. Georgia summers push attic temperatures past 150°F, and the inner liner of 1990s-era flex duct literally breaks down, releasing fibrous particles into the airstream. Homeowners notice this as dust that returns quickly after cleaning, or as respiratory irritation that peaks when the HVAC cycles.
- Disconnected or undersized runs in multi-zone systems. The 3,000-5,500 square foot homes common in Alpharetta’s master-planned communities were built with two or three HVAC zones, and installers sometimes cut corners on run sizing or support. The result is pressure imbalances that pull unfiltered outdoor air through every leak path.
- Pollen accumulation in return ductwork. Alpharetta’s preserved hardwood canopy produces pollen loads that neighboring cities with lighter tree cover simply don’t match. Return ducts in homes near dense canopy areas like Windward or Crooked Creek show layered deposits that reduce airflow and strain the air handler.
Pricing for Duct Repair & Sealing in Alpharetta, GA
| Service | Typical Range in Alpharetta |
|---|---|
| Duct sealing (single zone) | $280-$450 |
| Duct sealing (multi-zone) | $480-$650 |
| Flex duct repair (per run) | $320-$580 |
| Full flex duct replacement | $900-$1,400 |
| Metal duct repair | $350-$700 |
| Duct insulation (partial) | $400-$800 |
| Duct insulation (full system) | $900-$1,500 |
What moves a job toward the higher end: attic accessibility (tight crawl spaces add labor), number of zones, extent of liner degradation requiring source removal, and whether the plenum itself needs re-sealing. What doesn’t affect price: we don’t charge per vent, we don’t add “trip fees,” and we don’t upsell sanitizing on every job. The written price you receive before work starts is the price on the invoice. Call (470) 516-9337 for a free estimate - we’ll inspect with a camera and put a number in writing.
We Also Serve Cities Near Alpharetta
Our crews work daily in Alpharetta and the surrounding corridor: Roswell to the south, Woodstock and Holly Springs to the west, and Marietta where our scheduling office coordinates dispatch. The same written-price protocol, documented photo record, and 365-Day Done Right Promise apply in every city we serve.
Serving Alpharetta, GA - Our Local Coverage Area
We’re based in the Alpharetta 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 - Duct Repair & Sealing in Alpharetta
Yes, and probably more urgently than you expect. The 2003-2008 construction wave in Alpharetta produced homes with flex duct systems that are now 17-21 years old, squarely in the degradation window where inner liners begin failing in hot attics. Add construction debris left at handover and nearly two decades of pollen accumulation from the dense canopy around subdivisions like Windward, and the ductwork is often in worse shape than a 40-year-old metal system that was periodically maintained. Call (470) 516-9337 and we’ll camera-inspect at no charge - the photo evidence will show you exactly what condition your 2005 system is in.
Alpharetta’s master-planned communities preserved extensive hardwood and pine canopy as a selling feature, which produces some of the highest spring pollen counts recorded in metro Atlanta. Return-air intakes pull this pollen indoors continuously during March-May, and in homes with leaky duct envelopes, that pollen circulates and deposits year after year. The combination is specific to Alpharetta’s density of mature trees and its 1990s-2000s housing stock with original ductwork - neighboring cities with lighter canopy or newer construction don’t accumulate debris at the same rate. Sealing the duct envelope is what stops the cycle.
Yes. A typical Alpharetta home loses 20-30% of conditioned air through duct leaks, which means the HVAC runs longer to hit setpoint, pulling more humidity and driving up electricity bills during Georgia’s May-September cooling season. In the large two-story homes common here, upstairs zones with leaky attic runs are often 4-6 degrees warmer despite the system running continuously. Proper sealing with mastic, verified by pressure testing, restores designed airflow and reduces runtime. Most Alpharetta customers see utility reductions that offset sealing costs within 18-24 months.
We start with camera inspection of every run, looking for kinks, collapsed sections, and liner degradation. In a typical 1990s Alpharetta two-story, we find unsupported spans across wide attic spaces where the duct has sagged, and heat-degraded liner near the plenum connections. We replace damaged sections with new insulated flex duct sized to the original design, support it at proper intervals, seal all connections with mastic, and pressure-test the zone. The homeowner receives before-and-after photos of every run and a written scope showing what was replaced versus repaired. Most 1990s two-story jobs take one day and run $650-$1,200 depending on how many zones are affected.
NADCA - the National Air Duct Cleaners Association - sets the inspection, cleaning, and repair protocols we follow for every Alpharetta job. This means negative-pressure extraction during source removal, HEPA filtration on all equipment, and specific mastic application standards for sealing. The NADCA guideline is what separates documented duct repair from vacuum noise: it requires post-job verification that the system operates at designed airflow and that no debris remains in the cleaned runs. Our crews are trained to these standards, and the photo record we deliver shows compliance at each stage. If you want to verify our work against the standard, we’ll show you the relevant NADCA section and how we met it on your job.
Call (470) 516-9337 for a free estimate on duct repair and sealing in Alpharetta. We’ll put a written price in your hand before any work starts, and you’ll receive a documented photo record of every duct run when the crew leaves. That’s Haven Standard Clause 1, and it’s how we’ve worked since 2013.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Alpharetta since 2013.