Guardsman Duct Sealing Nationwide

Guardsman Duct Sealing in Fort Lauderdale: What to Know First

Guardsman duct sealing in Fort Lauderdale typically costs $450 to $1,200 depending on how much of your ductwork has pulled apart, and most jobs wrap up in a single visit. We handle Guardsman systems as an independent service provider, meaning we’re not bound by manufacturer service restrictions, but we respect Guardsman warranties and use sealing methods that keep them intact. If you’re seeing dust return within days of cleaning, weak airflow in the far rooms, or a utility bill that climbs every summer, call (754) 354-3644 and Roy Castellanos will walk you through what’s likely happening before anyone schedules a visit.

Call (754) 354-3644

This page is for Guardsman filtration system owners in Fort Lauderdale who need duct sealing done right the first time, with a written price before any work starts. No bait pricing, no moving numbers at the door.

How Guardsman Products Fail – and How We Fix Them

Guardsman manufactures filtration systems and air cleaners, not the ductwork itself. But when a Guardsman media filter or electronic air cleaner is installed on ductwork that was never properly sealed, the entire system works harder than it should. Here’s what we actually see in Fort Lauderdale homes:

• Guardsman Media Air Cleaner cabinets pulling away from the plenum. The weight of a Guardsman media cabinet (the GAC series and similar) hanging off a sheet-metal plenum causes sagging over time, especially in attics where Fort Lauderdale’s heat softens the old tape. We pull the cabinet, clean both mating surfaces, and reseal with mastic rated for 120°F attic conditions. Tape alone won’t last down here.
• Bypass gaps around Guardsman electronic air cleaner cells. The Guardsman EAC units sit inside a cabinet that’s frequently sized larger than the return drop it connects to. The result is a half-inch gap on one side where unfiltered air slips past the cell entirely. Owners notice dust on furniture even though the filter is clean. We fabricate a sheet-metal transition and seal it. The difference in airflow noise is immediate.
• Return-side leaks that make a Guardsman filter look like it’s “not working.” If the return path behind a Guardsman filter has leaks, attic air and insulation dust bypass the filter completely. We’ve had Fort Lauderdale customers replace their Guardsman media every 60 days thinking the filter failed, when the real problem was a unsealed return chase pulling insulation fibers through the wall cavity. We seal the return chase and the complaint disappears.
• Supply boots separating from ceiling drywall on second floors. Guardsman systems move a lot of air when they’re installed on high-static systems. That pressure finds every weak spot. We see supply boots that have separated a quarter inch from the ceiling register, blowing conditioned air into the attic. We reseal boots from inside with mastic and secure them so they don’t re-separate.
• Flex duct compression behind Guardsman filter housings. In tighter attic spaces common to Fort Lauderdale’s older neighborhoods like Victoria Park and Rio Vista, installers sometimes kink flex duct to make the Guardsman filter fit. Airflow drops, static pressure rises, and the blower motor works itself to death. We re-run or re-support the flex, then seal every connection. We’ve fixed systems where the owner had been told they needed a new air handler when all they needed was a properly routed and sealed return.

Our Guardsman Duct Sealing Process

1. 1
   We inspect the whole path first. Before touching anything, we map the return side and the supply side, using a manometer to see exactly where pressure loss is happening. A Guardsman filter housing is part of that path, and we test its connections specifically.
2. 2
   We show you what we found. Photos, pressure readings, and a plain-English explanation. You’ll see the gaps and know why the work is needed before any money changes hands.
3. 3
   We quote one written price. That price covers the sealing work we agreed on. It does not move at the door.
4. 4
   We decide parts together. If a Guardsman cabinet or transition needs replacing, we’ll give you OEM and quality aftermarket options with real price differences. We don’t push the more expensive route when aftermarket is just as good for the application.
5. 5
   We seal, then test. Mastic on metal connections, appropriate sealant on flex, and a post-seal pressure reading so you can see the improvement in black and white.
6. 6
   We leave it clean and covered. Every job gets a written work summary and the 365-Day Done Right Promise, with no fine print.

What Guardsman Duct Sealing Costs in Fort Lauderdale

Here are honest ranges for the Guardsman-specific scenarios we handle most in Fort Lauderdale:

• Reseal Guardsman media cabinet to plenum: $180 to $340
• Seal return chase and return-side leaks: $400 to $750
• Reseal supply boots (quantity and attic access affect price): $45 to $90 per boot, most homes have 8 to 14 boots
• Fabricate and install new transition for Guardsman EAC cabinet: $350 to $600
• Full duct sealing (average 1,800 sq ft home): $850 to $1,200

Attic accessibility is the biggest price variable. Some Fort Lauderdale attics are roomy; others require crawling through a 14-inch scuttle covered in blown insulation. We price that honestly before we start. Call (754) 354-3644 for a free estimate on your specific system.

Why Fort Lauderdale Homeowners Call Hollis Air Duct Fort Lauderdale for Guardsman Work

We’ve been working on South Florida ductwork since 2004, and Roy Castellanos grew up learning the trade before spending the better part of two decades doing HVAC and air duct work across Fort Lauderdale and the surrounding areas. His crew has been in homes a few blocks from Las Olas Boulevard and in commercial buildings near the Port Everglades corridor. That matters because Guardsman equipment doesn’t fail the same way in every climate, and the heat and humidity here create a specific set of problems you won’t read about in a national service manual.

Every job gets The Garrison Code treatment: arrive inside the quoted window, put the price in writing before touching anything, do the work by the book, and leave the site cleaner than we found it. Our technicians are background-checked and uniformed. The 365-Day Done Right Promise covers every repair in writing for a full year. If it fails, we come back at no charge, including a free second visit. And because we service Lennox, Trane, and Carrier systems alongside Guardsman, we understand how these filtration setups interact with the broader HVAC system, not just the filter cabinet in isolation. Clean ducts move air. Everything else is just noise.

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