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.
Lennox Air Duct Cleaning in Northbrook, IL | CleanRun Air Duct Cleaning Northbrook
Our Air Duct Cleaning in Northbrook for Lennox systems runs $380-$680 for a complete residential system, with most jobs scheduled within a week. What separates our work here from generic duct cleaning is this: Northbrook’s postwar housing stock was built with fiberglass ductboard, not metal, and a Lennox system can run perfectly while its ductwork sheds fibers into every room.
CleanRun Air Duct Cleaning Northbrook has serviced Lennox forced-air equipment across the village since 2013 - from G-series furnaces in ranch basements to variable-capacity Signature Collection systems in renovated colonials - and we also offer Dryer Vent Cleaning in Northbrook. We’re an independent duct and air-side specialist, not a Lennox dealer or authorized provider. We don’t sell new furnaces. We clean, seal, and document what’s actually inside your ductwork, then hand you a photo record of every run. Call (224) 351-9772 for a written estimate before any work starts.
Why Northbrook Residents Choose Us for Lennox Service
Tomas Reyes, our owner, grew up in the Bronx and trained at Apex Technical School in Queens before spending nearly two decades in residential and commercial HVAC duct systems across northeastern Illinois. He’s logged steady work in Northbrook, including homes near Northbrook Court where the original ductwork hasn’t seen a brush in decades. His habit is showing customers a camera photo of the plenum before quoting a dollar figure. The camera doesn’t negotiate - it just shows you what’s there.
That practice became CleanRun’s standard in 2013. Every Lennox job we take in Northbrook includes a Documented Photo Record of every duct run, delivered as part of the job file. We use OEM Lennox filter media and gaskets where the cabinet design demands exact fit, and quality aftermarket flex duct, sealant, and register boots on the ductwork itself, which is brand-agnostic. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews. The 365-Day Done Right Promise is written on every invoice, not buried in a policy manual.
We also provide Lennox sales & service context for homeowners comparing options, though we do not sell new Lennox equipment.
Common Lennox Air Duct Cleaning Problems We Solve in Northbrook

- Gray furnace filters from delaminating ductboard. Lennox high-efficiency furnaces installed in the 1990s and 2000s push high static pressure through original Northbrook ductboard runs. The inner liner breaks down and sheds fiberglass into the return just downstream of the air handler. Several Wescott-area homes we’ve serviced had filters loaded with fiberglass dust, not ordinary household debris.
- Black-stained flex duct from sweating cased coils. Lennox CBX and CHX cased coils mounted in unconditioned Northbrook crawlspaces and attic plenums sweat through our humid continental summers. Bio-growth develops on the fin pack, then stains the adjacent flex-duct interior black. The odor travels back to the return. Cleaning the coil and adjacent ductwork removes the contamination; sealing the plenum with mastic prevents recurrence.
- Dust-sealed air handler cabinets from undersized returns. Many original ranch and split-level homes west of Waukegan Road have returns sized for 1960s blowers, not modern Lennox variable-capacity equipment. The blower runs at high static and pulls dirty air past mastic-joint gaps, coating the coil and cabinet with dust that never reaches the filter. We scope the return path, seal the gaps, and clean the cabinet interior.
- Rodent-compromised ductboard in unheated basements. Fiberglass ductboard trunks in Northbrook’s older basements get chewed at boot penetrations. A Lennox heat exchanger downstream of that leak can run with a fouled secondary air path before anyone notices the duct damage. Our video inspection finds the breach; our written report documents whether cleaning suffices or replacement is required.
- Biological loading from forest-preserve pollen and mold spores. Northbrook’s proximity to the North Branch Chicago River corridor and Cook County forest preserves elevates ambient spore counts. Ductboard liners provide a textured surface for microbial attachment that sheet metal doesn’t. We treat affected runs with EPA-registered sanitizer and document before-and-after conditions photographically.
Before
AfterLennox Service in Northbrook: What Local Conditions Mean for Your Equipment
Northbrook’s primary residential build-out ran from the late 1950s through the mid-1980s, leaving a large share of the village’s housing stock with original fiberglass ductboard systems now 40-65 years old. Unlike sheet-metal ducts that simply accumulate dust, aging ductboard liners delaminate and shed fibers into the airstream. This isn’t a theoretical concern in Northbrook. In the original ranch and split-level tracts - Wescott, the streets west of Waukegan Road - a Lennox system can be working fine on the heating side while the ductboard trunk above it is shedding fiberglass into the supply. The only reliable way to tell is scoping the liner, not looking at the furnace.
We were called to a 1968 split-level in Wescott running a Lennox G61MPV with a chronically gray furnace filter, and the video scope showed the fiberglass ductboard trunk liner was delaminating past the takeoffs. We cleaned the accessible metal runs and air handler, sealed the compromised joints with mastic, and gave the owner a written liner-condition report recommending replacement of the ductboard trunk before the next heating season. That report, not the cleaning invoice, was the real deliverable on that job.
For homeowners across Northbrook service area, this means duct cleaning here routinely requires technicians to assess liner integrity and recommend full duct replacement rather than cleaning alone. It’s a conversation far less common in newer-build suburbs, and it’s structurally built into Northbrook’s housing age.
Lennox Models & Products We Service in Northbrook

We work on the full Lennox residential and light-commercial air-side lineup: G61MPV, G60, G71P, and SL280V furnaces; XC, XC21, XC25, and SL28XP air conditioners with matching cased coils; CBX and CHX cased coils; and Dave Lennox Signature Collection air handlers. Our equipment roster includes Rotobrush agitation systems, Nikro and Abatement Technologies negative-pressure extractors, and Honeywell, Aprilaire, and Guardsman air quality components - tools customers can verify independently.
OEM Lennox filter media and cabinet gaskets are stocked for exact-fit replacement where the coil or air handler design requires them. For ductwork itself - flex, mastic, register boots - we use quality aftermarket components, since duct construction is essentially brand-agnostic. On aging Lennox equipment paired with delaminating Northbrook ductboard, we tell homeowners plainly when the air side is the real problem and cleaning alone won’t fix it. No upsell theatre. Just what the camera shows and what the written price covers.
Lennox Service Pricing in Northbrook
Lennox air duct cleaning in Northbrook typically runs $380-$680 for a complete residential system, depending on duct run count, accessibility, and whether video inspection reveals conditions requiring repair or sealing. Duct sealing adds $200-$400 for a typical ranch or split-level. Air handler cleaning, including the coil and blower assembly, runs $180-$320 when performed as part of a full system cleaning.
Every estimate includes:
- Written price delivered before any work starts - Haven Standard Clause 1
- Video inspection of accessible ductwork
- Documented Photo Record of every run, before and after
- 365-Day Done Right Promise in writing
We do not quote per-vent pricing. One flat price per system, agreed before the first panel comes off. Call (224) 351-9772 for an exact quote - estimates are free, and we provide a Free Second Opinion on any competitor’s written estimate.
Serving Northbrook, IL - Our Local Coverage Area

We’re based in the Northbrook 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 - Lennox Air Duct Cleaning in Northbrook
It’s almost always the ducts, specifically fiberglass ductboard liner delaminating into the return. The furnace is doing its job; the debris is structural. We scope the return trunk to confirm. Call (224) 351-9772 for an exact quote - estimates are free.
We can clean accessible metal runs and the air handler, but delaminating ductboard liner cannot be restored to integrity. If the scope shows active fiber shedding, we provide a written liner-condition report and recommend replacement. Cleaning a compromised ductboard trunk is temporary at best.
Modern Lennox variable-capacity blowers move more air at lower static than older single-stage units, but they still need properly sized returns. Many Northbrook homes have returns sized for 1960s equipment. We measure static pressure and scope the return path to identify restrictions.
The ductwork itself is brand-agnostic. Where Lennox-specific knowledge matters is cabinet design, coil orientation, and filter rack geometry. We stock OEM Lennox gaskets and media for exact-fit replacement, and we know the common air-side failure modes of Lennox high-efficiency furnaces in Northbrook’s ductboard housing stock.
Every three to five years for cleaning assessment, but immediately if you notice gray filter loading, musty odors, or reduced airflow. Given Northbrook’s ductboard age and our humid continental climate, liner condition changes faster than in sheet-metal systems. Call (224) 351-9772 to schedule a scope - estimates are free.
Service Areas Near Northbrook

CleanRun serves Northbrook and surrounding communities including Lennox service in Deerfield, Lennox service in Glenview, Highland Park, Mount Prospect, and Des Plaines. The same written-price, photo-documented standard applies across all service areas.
Book Your Lennox Service in Northbrook Today
Call (224) 351-9772 to speak with a live person and schedule your Lennox air duct cleaning in Northbrook. We’ll deliver a written price before any work starts, scope your ductwork with video, and hand you a Documented Photo Record of every run when we leave. The 365-Day Done Right Promise covers every job in writing.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Northbrook since 2013.




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