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.
Why Marietta Homeowners Choose Lennox Air Duct Cleaning
We’re an independent Lennox in Marietta air duct cleaning service, and we handle the duct side of Lennox systems other companies won’t touch. Marietta’s heat punishes ductwork. Long AC seasons pull in pollen, Georgia red clay dust, and enough humidity to make your attic feel like a sauna. That combination settles inside Lennox return plenums and supply runs, choking evaporator coils and forcing variable-speed blowers to work against static pressure they were never designed for. We clean and repair the full duct path around your Lennox equipment, from return boots to grilles, using Rotobrush rotary brush systems and Nikro HEPA-rated negative-pressure extraction. We are not affiliated with or authorized by Lennox. We are an independent provider that services Lennox equipment across the entire Marietta area. Call (762) 216-4075 for a written price before any work starts.
Why Trust Cardinal Air Duct Marietta for Your Lennox Air Duct Cleaning?
Because we see what Lennox systems actually do in Marietta attics, not what they do in a brochure. Omar Haddad, Owner at Cardinal Air Duct Marietta, trained in heating and ventilation at Los Angeles Trade-Technical College and spent years learning the difference between a duct that needed brushing and one that needed replacing. That experience matters when a Lennox XC25 is throwing a high-static-pressure fault and the real cause is a collapsed 12-inch flex return behind the master bedroom wall. We don’t guess. We measure static pressure, inspect the plenum, and run a camera down the trunk line before we touch anything. Every technician is background-checked and uniformed. You know the tech’s name before they open the door. We use Rotobrush brush systems, Nikro HEPA vacuums, and Abatement Technologies containment units. No truck-mounted shop-vac shortcuts. No vague estimates. Just a written price before any duct is opened.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Fix in Marietta
- Fiberglass liner delamination inside variable-speed return plenums. Signature Collection and Elite Series air handlers, like the SLP98V and EL296V, often have internal fiberglass insulation lining the return plenum. After 10 to 15 years of Marietta humidity, that liner breaks down and releases glass fibers into the airstream. Those fibers clog the evaporator coil and coat the blower wheel, reducing airflow and making the motor run hotter. We remove the loose liner, clean the plenum, and seal the surface so it stops shedding.
- Collapsed flex duct in attic chases above two-story colonials. East Marietta’s two-story homes often have return ducts running through tight attic chases. Flex duct sags at 90-degree turns, pinching down to half its diameter. Your Lennox variable-speed blower senses the restriction and ramps up, which is why you hear it surging even when the thermostat hasn’t changed. We reroute those returns with smooth elbows, replace crushed sections, and seal every joint with mastic.
- Rust-through at the bottom seam of cased evaporator coil cabinets. Lennox cased coils sit directly above the furnace in many Marietta split-levels. Condensate drips for 15 years, rust eats through the bottom seam, and rust flakes get vacuumed into the supply runs. You see reddish-brown dust on your registers. We clean the coil, replace the corroded cabinet section, and re-level the drain pan so water actually leaves the unit.
- Black dust blowing from supply vents above Lennox furnaces. That black dust is usually soot, mold spores, or insulation fibers that have accumulated in the supply plenum and trunk lines. In Marietta’s older 1960s – 80s ranches, original metal ducts often have poorly sealed joints that pull crawlspace air into the system. We clean the supply side, seal the leaks, and replace any duct sections that are shedding particles.
- Lint-clogged dryer vent transitions on Lennox gas dryer hookups. Marietta two-story colonials frequently run dryer vents more than 20 feet to reach a second-story exterior wall. Lennox gas dryers push hot, moist air through those long runs, and lint cakes onto the ridges of flex transition hose. Backpressure builds, drying times double, and in the worst cases the thermal fuse trips. We clean the full vent path and replace long flex transitions with rigid smooth-wall duct where code allows.
Lennox Parts & Our Repair-vs-Replace Approach
When a Lennox duct system needs new collars, dampers, or access panels, we source OEM-spec sheet metal from Atlanta HVAC supply houses rather than universal box-store parts. That matters because Lennox plenums and coil cabinets have specific dimensions. A universal collar might fit, but it leaves gaps that leak conditioned air into your attic. We use the right part. On the repair-versus-replace question, we’re direct with you. If a Lennox blower motor or coil has already been killed by years of clogged ducts, we’ll tell you whether the repair still makes sense. Sometimes the $1,500 variable-speed ECM module isn’t worth saving if the $4,500 duct system feeding it is shot. You deserve that honesty. Omar didn’t build this business on selling parts people don’t need. Call (762) 216-4075 for a straight answer on your Lennox system.
Our Lennox Service Process – Step by Step
- 1
Diagnosis. We measure static pressure across the Lennox air handler, inspect the blower wheel and evap coil for fiberglass or rust contamination, and run a camera through the return and supply trunks. On variable-speed models like the XC25 or EL18XCV, we check fault codes and compare them to duct conditions.
- 2
Cleaning and repair. We set up an Abatement Technologies containment unit, cut access ports, and run Rotobrush rotary brushes through each run while the Nikro HEPA vacuum maintains negative pressure. Negative-pressure extraction means loosened debris goes straight into the vacuum, not back into your living room.
- 3
Test. We re-measure static pressure after cleaning, confirm airflow at each register, and check the Lennox blower’s RPM and wattage draw to verify the system is breathing normally again.
- 4
Warranty. Every job is covered by the 365-Day Done Right Promise. If the work isn’t right within 365 days, we return and correct it at no charge. Written guarantee on every repair, plus a free second visit if any repair fails.
See the difference
Before
After
Before
After
Before
AfterLennox Products We Service & Install in Marietta
We service the full Lennox residential lineup across Marietta, including the Dave Lennox Signature Collection (SLO185V, SLP98V, XC25), Elite Series (EL296V, EL18XCV), and Merit Series (ML196E, 13ACX). Our technicians understand the control logic differences between constant-torque and variable-speed ECM blowers, and how each responds to dirty ducts differently. We stock common duct components locally: Lennox-compatible filter racks, return grilles, damper assemblies, and flex duct in standard 6, 8, 10, and 12-inch diameters. If your Lennox needs a part we don’t carry, we source it from Atlanta HVAC supply houses the same day.
We Also Service These Brands
Beyond Lennox, our technicians also handle Dryer Vent Cleaning and work on Trane and Carrier equipment regularly. The ductwork doesn’t care whose name is on the air handler. What matters is airflow, static pressure, and sealing. We bring the same Rotobrush and Nikro equipment to every job, regardless of brand.
FAQs – Lennox Air Duct Cleaning Service in Marietta
No. We are an independent Lennox service provider in Marietta, not an authorized dealer or factory warranty station. That independence means we can tell you the truth without a factory sales quota behind the answer. Our technicians are trained on Lennox equipment and we use OEM-spec parts where it counts. Call (762) 216-4075 with questions about your specific Lennox model.
When we repair duct components that touch the Lennox system, we source Lennox-compatible OEM-spec sheet metal, collars, and dampers from Atlanta HVAC supply houses. We don’t use universal box-store parts that leave gaps. For filtration products we carry Honeywell, Aprilaire, and Guardsman. If a specific Lennox component is required, we’ll tell you before ordering.
That surging is almost always a static pressure problem in the ductwork. Variable-speed blowers try to maintain a target airflow, and when the return side is choked off, the blower ramps up to compensate. Then the restriction worsens, and the blower backs off to protect itself. In Marietta, the usual culprit is collapsed flex duct in the attic or a clogged return plenum. Call (762) 216-4075 and we’ll diagnose the pressure readings before recommending anything.
Yes. ECM blower modules fail prematurely when they run hot for months on end. Clogged ducts force the motor to run at higher RPMs against higher static pressure, which builds heat in the module. We’ve seen Lennox variable-speed blower modules fail in as little as six years when the return ducts were never cleaned. Regular duct cleaning costs less than a $1,500 ECM module replacement.
No. Cleaning the ductwork connected to a Lennox system does not void the equipment warranty. Lennox warranties cover the equipment itself, not the ducts. But damage caused by negligent cleaning, like puncturing a coil with a brush, would not be covered. That’s why we use professional Rotobrush and Nikro equipment with trained technicians. We work carefully around your Lennox equipment, and our 365-Day Done Right Promise backs the work.
Most standard air duct cleanings for a typical Marietta home run $450 to $900 for the full system, depending on the number of supply runs, whether the return plenum needs liner removal, and whether any flex duct needs replacement. A simple single-system cleaning with one return usually lands around $450 to $600. Larger two-story homes with two systems run $800 to $1,200. We give a written price before any work starts, and it doesn’t change at the door. Call (762) 216-4075 for an exact quote. Estimates are free.
Book Your Lennox Service in Marietta, GA
Dirty ducts don’t fix themselves – let’s just get it done right. Call Cardinal Air Duct Marietta at (762) 216-4075 and we’ll schedule your Lennox air duct cleaning with a live trackable arrival window, before-and-after photo proof, and a written price before any work starts.
Written by Omar Haddad, Owner at Cardinal Air Duct Marietta, serving Marietta, GA homeowners with professional Lennox air duct cleaning and repair.