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.
Guardsman Air Duct Repair in Marietta: What to Know First
We repair Guardsman air duct systems throughout Marietta, typically completing most duct repairs in a single visit. As an independent Guardsman service provider, we charge one flat price for the repair, agreed in writing before any work begins, not an hourly rate that creeps upward. This page is for Guardsman owners in Marietta who’ve noticed weak airflow, a musty smell, or visible duct damage, and want to know what it will actually cost and whether the repair will hold. Call (912) 405-8840 for a free estimate, and we’ll walk you through what we find before we ever write up a ticket.
How Guardsman Products Fail – and How We Fix Them
Guardsman air purification and duct components tend to fail in predictable ways. Here’s what we see most often in Marietta homes and what we do about it:
- Guardsman UV Air Purifier bulb burnout causing false “low airflow” complaints. We see this on the Guardsman UV-C series installed in HVAC plenums. The bulb dies, the unit starts buzzing or throwing an indicator, and the owner thinks the ducts are blocked. We test the unit first, replace the bulb or ballast if needed, then pressure-test the ducts to confirm whether there’s a real airflow problem behind the electronic one. Half the time, the ducts are fine.
- Loose mounting at the plenum seam on Guardsman PCO (photocatalytic oxidation) units. Marietta’s summer humidity softens older mastic seals, and the weight of the unit pulls away from the sheet metal, creating a bypass leak. We pull the unit, clean both surfaces, re-seat it with fresh mastic and mechanical fasteners, and reseal. The leak stops, and the unit draws air through it the way it’s supposed to.
- Crushed flex duct runs in attics where Guardsman units were added after the original build. We find this constantly in older Cobb County homes, especially ranches around Kennesaw Mountain where attic space is tight and someone ran flex duct over roof trusses to reach a Guardsman unit. The duct kinks, airflow to that register drops, and sometimes condensation collects at the kink. We replace the crushed section with the correct R-value flex, support it properly, and balance the run.
- Ductboard deterioration at the return side feeding Guardsman media filters. Guardsman media cabinets often get installed on the return side, and in Marietta’s humidity the ductboard around the cabinet can absorb moisture over years and start to sag or crumble. We cut out the bad section, transition to metal duct or new ductboard, and rebuild the connection so the filter cabinet sits flush and seals clean.
- Improperly sized HVAC-to-Guardsman transitions from the original install. This is an install shortcut we fix regularly on the Guardsman media air cleaner line. The original contractor used an adapter that’s too small for the blower, and the system has been noisy and underperforming since day one. We measure the actual CFM, fabricate the right transition, and install it. The difference in noise level and airflow is immediate.
Styles & brands we work with
Our Guardsman Air Duct Repair Process
When you call us about a Guardsman duct problem in Marietta, here’s how the job goes, start to finish.
- 1
You call (912) 405-8840. A live person answers. You tell us what you’re seeing: low airflow, noise, smell, a specific room that won’t heat or cool. We schedule a visit and send you the technician’s name and photo before they arrive.
- 2
The tech shows up and shows ID. Badge, uniform, the same face from the photo. No mystery guests. They’ll walk the system with you and listen before they start poking around.
- 3
We diagnose the actual problem. Pressure readings, visual inspection of accessible duct, airflow measurements at registers. On a Guardsman job, we also test any attached purification or media filtration components so we’re not fixing duct while ignoring the device that caused the issue. In Marietta, we also check for humidity-related damage and condensation points while we’re in there.
- 4
We show you the findings and quote a flat price. “Tell me what’s in the system before you tell me what it costs to fix it.” That’s how we operate. We’ll show you the crushed flex, the failed seal, the bad bulb, whatever it is, and explain the fix in plain terms. The price is written down before any work starts. No hourly billing, no surprise add-ons at the end.
- 5
We make the repair. For Guardsman-specific components, we use OEM parts where it matters for warranty or performance, and quality aftermarket where it saves you meaningful money with no functional difference. We’ll tell you which is which and why before we order or install anything.
- 6
We test the system and document everything. Airflow readings before and after, photos of the repaired section, and a walkthrough so you can see what we did. Your written guarantee is attached to the invoice.
See the difference
Before
After
Before
After
Before
AfterWhat Guardsman Air Duct Repair Costs in Marietta
Repair pricing depends on what’s actually wrong, but here are the real ranges we charge in Marietta for the most common Guardsman-related duct repairs:
- Seal and remount a loose Guardsman UV or PCO unit: $180 to $320
- Replace a crushed flex duct run to a Guardsman unit (sections up to 25 feet): $275 to $450
- Rebuild a deteriorated return ductboard connection at a Guardsman media filter cabinet: $350 to $650
- Fabricate and install a correctly sized transition at a Guardsman media air cleaner: $300 to $550
- Replace a failed Guardsman UV-C bulb and ballast, plus re-test: $240 to $400
What moves the price: attic access difficulty, duct size and length, whether the damaged section is buried in a finished ceiling versus open attic, and whether we’re replacing a component or just resealing it. The flat price we quote is the flat price you pay, parts and labor included. Call (912) 405-8840 and we’ll give you a real number based on what’s in your system, not a generic range from a call center.
Why Marietta Homeowners Call Linden Air Duct Marietta for Guardsman Work
We’ve been working in Marietta and the East Cobb corridor for more than a decade. Marcus Veale, the owner, came up through the mechanical side of the trade, completed his HVAC coursework at Los Angeles Trade-Technical College, and has built a crew that has seen Guardsman components in every state of install quality you can imagine. We are not authorized by Guardsman, and we’ll be straight with you about that. What we bring is practical, honest experience with their product line, and the standing commitments every Linden job carries: a written price before any work begins, a written guarantee on every repair, and a free second visit if a covered repair doesn’t hold. We service all the other major brands too, so if your home runs a Lennox, Trane, or Carrier system alongside Guardsman components, one visit covers everything.
Guardsman Air Duct Repair FAQs
No. As an independent Guardsman service provider, the duct repair work we perform on the surrounding duct system does not void the warranty on your Guardsman unit itself. What can void a warranty is leaving a problem unfixed so the unit runs under stress and fails. If we’re replacing a Guardsman component like a UV bulb or ballast, we’ll tell you whether OEM or aftermarket affects that component’s coverage, and you get the final call before anything is ordered.
For most common Guardsman components like UV-C bulbs, ballasts, and media filters, we have the usual suspects on the truck or can source them locally within one or two business days in Marietta. More unusual Guardsman parts may require a special order, typically three to five business days. We’ll give you a straight timeline before scheduling the repair. Call (912) 405-8840 and we’ll check availability for your specific unit while you’re on the phone.
If the housing, wiring, and mounting are in good shape, repairing is almost always the better call in the short term. A failed bulb or ballast is a simple replacement, and a rebuildable duct connection is far cheaper than swapping a whole unit. If the unit’s internals are corroded from Marietta humidity or the housing is cracked from repeated overheating, replacement starts to make financial sense. We’ll show you the condition of your unit and help you compare the numbers honestly, without pushing you toward the bigger ticket.
More often than not, the ductwork failure is independent of the Guardsman unit. Crushed flex in the attic, deteriorated ductboard, and condensation damage are age and climate issues that hit every home in Marietta eventually. What makes a Guardsman job different is that a leaking plenum or bypass around the unit makes the purification system work harder and do less. Fixing the duct problem is what allows the Guardsman component to do the job you bought it for.
We test before and after, and we show you the numbers. Airflow readings at the affected registers, pressure readings where the leak was, and photos of the repaired section. If the repair doesn’t hold, the written guarantee covers a free second visit. You’re not trusting our word. You’re looking at the measurements and the work with your own eyes, every single time.
Written by Marcus Veale, Owner, Linden Air Duct Marietta at Linden Air Duct Marietta, serving Marietta and nearby areas.