Guardsman Duct Sealing Nationwide

Guardsman Duct Sealing in Alpharetta: What to Know First

Guardsman duct sealing in Alpharetta typically runs $450 to $1,400 depending on how much of the ductwork has separated, and most jobs are completed in a single visit. We’re an independent Guardsman service provider, not a Guardsman dealer, which means we recommend the fix that actually solves the leak instead of the one that protects a warranty claim. If you own a Guardsman filtration or duct system in Alpharetta, this page tells you what fails, what it costs to fix, and how we handle the work.

Call (762) 769-7145

Call (762) 769-7145 for a written quote before any work starts. Roy Castellanos and our Alpharetta crew have been sealing ducts in this area since 2004.

How Guardsman Products Fail – and How We Fix Them

Most Guardsman duct sealing calls we run in Alpharetta aren’t complicated. The ducts have separated at a joint, or the mastic has cracked, or a prior installation used foil tape that’s now peeling. Here’s what we see most often:

• Guardsman UV air purifier installations with duct transitions that leak at the cabinet. When a Guardsman UV purifier gets mounted into the supply plenum, the transition collar takes vibration from the blower. After a few Alpharetta summers, the collar seal cracks and conditioned air bleeds out before it reaches the registers. We reseal the collar with duct mastic and reinforce the joint so it doesn’t flex loose again.
• Guardsman media filter cabinets with gaskets that flatten over time. The cabinet door gasket on Guardsman media filter housings compresses with repeated filter changes, especially in homes that run the blower year-round. Once that gasket flattens, unfiltered air bypasses the filter and the door itself rattles. We replace the gasket and check the cabinet mounting flange for gaps at the same time.
• Return plenums on Guardsman systems in two-story Alpharetta homes. Near Windward Parkway and across the older two-story tracts, we regularly find return plenums that have pulled away from the drywall because the original install used construction adhesive instead of a mechanical connection and mastic. The symptom is a whistling return and dust buildup on the filter far faster than it should. We refit the plenum, seal with mastic, and re-check negative pressure at the return.
• Flex duct runs that have pulled off Guardsman supply boots. Guardsman doesn’t make the flex duct itself, but their systems often get paired with flex runs in attic installs. In Alpharetta’s heat, the zip ties and tape on those connections degrade. We find the separated boot, clean the mating surfaces, resecure with proper mechanical fasteners, and seal with mastic rated for attic temperatures.
• Guardsman ERV and HRV duct connections that were never sealed correctly at install. When a Guardsman ventilation unit gets added to an existing system, the installer is tying into existing ductwork that may not have been built for the job. The connection points leak, and the unit ends up pulling attic air instead of fresh outdoor air. We seal those tie-ins and verify airflow direction with a pressure test.

Our Guardsman Duct Sealing Process

Every Guardsman sealing job follows the same path, whether it’s a single leaking joint or a whole-system reseal. No shortcuts, no surprises.

1. 1
   You call or book online. A live person answers at (762) 769-7145, any day, any hour. We schedule a window and tell you who’s coming.
2. 2
   We inspect the system. Our tech checks every accessible joint, boot, plenum, and connection on your Guardsman setup. We use a pressure reading to identify which leaks actually matter, not just the ones that look bad.
3. 3
   You get a written price. Before we touch anything, you have a number on paper for the exact work your system needs. It doesn’t change at the door.
4. 4
   We seal what’s leaking. Depending on the joint, we use duct mastic, mastic tape, or mechanical reinforcement. For Guardsman cabinet and collar connections, we pull the trim and reseal the mounting flange, not just the visible seam.
5. 5
   We test and verify. After sealing, we re-check pressure and airflow. The fix either holds or we do it again before we leave.
6. 6
   You get the 365-Day Done Right Promise in writing. If that seal fails within a year, we come back at no charge and make it right. That includes a free second visit.

What Guardsman Duct Sealing Costs in Alpharetta

Here are the ranges we quote most often for Guardsman work in Alpharetta.

• Single leaking joint or boot reseal: $180 to $350. This covers one connection, cleaned and resealed with mastic.
• Guardsman filter cabinet gasket and flange reseal: $250 to $450. Includes gasket replacement and checking the cabinet mounting for bypass.
• UV purifier collar or plenum transition reseal: $300 to $600. More labor because the unit usually has to be unmounted and refit.
• Whole-system duct sealing for a typical Alpharetta two-story home: $900 to $1,400. Includes all accessible supply and return joints, boots, and plenums, plus before-and-after pressure readings.
• ERV or HRV tie-in reseal: $400 to $800 depending on how many connection points were leaking.

What moves the price is access. Attic work in a Georgia summer is slower, and two-story homes with finished ceilings mean more time to reach the runs. We’ll tell you before we start, in writing, exactly what your job costs. Call (762) 769-7145 for a free estimate.

Why Alpharetta Homeowners Call Hollis Air Duct Alpharetta for Guardsman Work

We’ve been cleaning and sealing duct systems in Alpharetta since 2004, as part of the Garrison Partners family. That’s two decades of looking at how Georgia humidity, attic heat, and fast tract-home installs combine to make ductwork fail. Nobody working on our trucks is new to this trade, and every tech is background-checked and uniformed before they walk through your door.

The 365-Day Done Right Promise is the part that matters most to us. It says, in writing, that if the seal fails within a year, we come back and make it right at no charge. Not a pro-rated credit, not a re-diagnosis fee. We come back.

We also work on the other brands sitting next to your Guardsman equipment. If your leak is actually coming from a Lennox coil cabinet or a Trane return plenum or a Carrier filter base, we’ll tell you that and seal it. One crew, one standard, no brand games.

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