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.
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AfterLennox Air Duct Cleaning in Chicago, NY | CleanRun Air Duct Cleaning
We provide independent Lennox duct cleaning and repair across Chicago, including our Air Duct Cleaning in Chicago, specializing in the pre-war housing stock that makes this city’s ductwork unlike anywhere else in the country. The short version: Lennox equipment is engineered for precise airflow, but most Chicago homes are pushing that air through ducts retrofitted decades before the furnace existed. That mismatch is where we work. Call (806) 606-6902 for a written price before any work starts.
Why Chicago Residents Choose Us for Lennox Service
Most duct cleaning companies will clean anything with a vent. We take a different approach, because a Lennox variable-speed blower does not behave like a single-stage motor from a builder-grade furnace. It ramps up and down based on static pressure readings, which means a partially clogged return in a Chicago bungalow does not just reduce airflow, it confuses the furnace’s control board and can trip high-limit switches. We’ve seen it on Lennox SLP98V units in Marquette Park, Clearing, and Portage Park more times than we can count.
Tomas Reyes, our owner and lead technician, grew up in Woodside, Queens, a few blocks from the elevated 7 train, in a building old enough that the ductwork had not been touched since the Carter administration. He confirmed that himself once he got into the trade, and it shaped how he runs CleanRun: camera inspection first, written scope second. No work starts until you’ve seen exactly what is inside your ducts. His HVAC coursework at Queensborough Community College gave him the technical foundation, but Chicago’s housing stock gave him the practical education. You can also learn more about our broader Lennox sales & service work.
We are an independent Lennox service provider. That matters because we are not tied to a manufacturer program, which means our recommendations are based on what we find inside your ductwork, not on what a corporate checklist tells us to sell.
Common Lennox Air Duct Cleaning Problems We Solve in Chicago
Here is what we actually find when we open up Lennox systems in Chicago homes:
- Coal-era residue choking airflow on variable-speed blowers. Chicago’s 80,000 bungalows were built between 1910 and 1940, before forced-air heating existed. When those homes converted from coal-fired gravity “octopus” furnaces to gas, the original galvanized trunk ducts often stayed in place. We pull blackened coal soot out of those trunks on a regular basis. On a Lennox SLP98V, that restriction makes the blower work harder and the high-limit switch trips, shutting down heat in January.
- Leaky uninsulated sheet metal runs causing condensation and mold on Lennox cooling coils. Chicago’s two-flats and three-flats often have duct runs through unconditioned crawlspaces. Warm humid air from Lake Michigan summers hits cold sheet metal in those spaces, condensation forms, and mold follows. That mold then lands on your Lennox cooling coil, which is exactly where you don’t want biological growth.
- Mismatched flex duct connections at the air handler pulling in attic particulate. Courtyard apartment buildings and greystones rarely have standard duct layouts. Builders retrofitted whatever fit, which often means undersized flex connectors or tears at the Lennox air handler. Those gaps pull insulation fibers, drywall dust, and whatever else lives in the wall cavity directly into your conditioned air.
- Corroded round trunk ducts flaking into Lennox heat exchangers. Original 1950s galvanized ducts in the bungalow belt were never meant to last 70 years. The corrosion we see in Chicago basements, especially after decades of humid summers, creates metal flakes that circulate and settle on heat exchanger surfaces. That reduces efficiency and can shorten equipment life.
- Makeshift trunk lines in pre-war two-flats causing uneven heating by floor. When a building was designed for radiators, every forced-air retrofit is an improvisation. We routinely see trunk lines that were sized by guesswork, and the result is a Lennox furnace running perfectly while the second-floor bedroom stays 10 degrees colder.
BeforeAfterLennox Service in Chicago: What Local Conditions Mean for Your Equipment
Here’s the thing that’s different about Chicago, and it is not true in Evanston or Oak Park or any suburb you can name. Chicago’s roughly 80,000 bungalows concentrated across the Northwest and Southwest sides were designed for gravity heat. Air rose from a coal-fired basement furnace through massive ducts, no blower involved. When those homes converted to gas in the 1950s and 1960s, contractors often kept the original galvanized round trunk ducts and bolted a blower onto the system. The result: ductwork sized for lazy, low-pressure airflow now being asked to deliver precise, high-pressure airflow for a modern Lennox variable-speed furnace, which is why HVAC Cleaning - Chicago specialists like us focus on these retrofitted systems. In neighborhoods like Portage Park, Clearing, and Marquette Park, our techs can identify the bungalow belt just by what comes out of a Lennox return duct. Coal soot, 70-year-old corrosion, and lint from decades of window-unit air conditioners. This is not a Lennox defect. It is a collision between 1920s engineering and modern HVAC demands, and it is fixable without tearing out your basement.
Chicago homes are also sealed tight from November through late March to survive polar vortex events. That means whatever is in your ducts recirculates for five-plus months without dilution. Add Lake Michigan’s summer humidity, and basement duct runs cooled by central AC become condensation points that breed mold heading into the next heating season. In a city like St. Louis or Indianapolis, the shoulder seasons let the house breathe. Chicago doesn’t get that luxury. Explore our full Chicago service area to see if we cover your neighborhood.
Lennox Models & Products We Service in Chicago
We work on the full range of Lennox residential duct systems, including the Healthy Climate line, Elite Series, Merit Series, and the SLP98V variable-capacity furnace ductwork that is common in higher-end Chicago retrofits. Our approach to parts is straightforward: when airflow or static pressure demands exact OEM specifications, we recommend genuine Lennox filters and components. For routine sealing and repair, we use equally reliable aftermarket mastic, insulation, and fittings. If a Lennox duct section is severely corroded or collapsed, we are upfront about whether patching is a temporary fix or a full run replacement is the honest solution. We keep common Lennox-compatible components on our trucks so a Chicago service visit doesn’t require a second trip across town.
Lennox Service Pricing in Chicago
Here is what Lennox duct cleaning and repair typically costs in Chicago, in writing:
- Whole-home duct cleaning (single system): $425-$680
- Duct cleaning for a bungalow with original galvanized trunks (heavy coal-era contamination): $550-$850
- Air leak repair with mastic sealant (per run): $90-$180
- Duct insulation replacement (per linear foot): $8-$14
- Camera inspection only (with written findings): $125, credited toward any work you approve
Your price is written before we open a single panel. It covers the entire system, not per-vent upcharges. What drives cost in Chicago specifically is the age and condition of those retrofitted bungalow trunks. A 1950s galvanized run that has never been cleaned takes longer and requires more aggressive extraction than a suburban tract home built in 2005. Call (806) 606-6902 and we will give you a number in writing.
Serving Chicago, IL - Our Local Coverage Area
We’re based in the Chicago 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 Chicago
Yes. We clean those trunks with negative-pressure extraction and soft agitation tools that remove the coal soot and debris without tearing the galvanized metal. The key is camera inspection first, so we know where the weak spots and corrosion are before tools go in. We have done hundreds of these in Portage Park, Clearing, and Marquette Park without damaging original ductwork. Call (806) 606-6902 for a written price.
Usually because the ductwork was never sized for a modern blower. Pre-war two-flats in Chicago were retrofitted with forced air using whatever trunk lines fit, and a Lennox variable-speed blower pushing against undersized or partially blocked ducts creates turbulence you hear as noise. The fix often involves sealing leaks with mastic, insulating exposed sections, and cleaning restrictions, rather than replacing the blower.
Not automatically. Coal soot in ducts tells you the ducts are dirty, not that the heat exchanger has failed. We inspect the heat exchanger separately and photograph it before and after. If it is cracked, we will tell you. If it is fine, cleaning the ducts removes the contaminant source. That is part of why every CleanRun job ends with a photo record of every duct run.
The recurrence is driven by condensation, not by inadequate cleaning. We address it by insulating exposed sheet metal runs in unconditioned spaces, sealing air leaks that pull humid air into the duct, and treating the coil with an approved sanitizer. The photo record we provide on every visit documents the before and after so you can verify the work was actually done. Call (806) 606-6902 for an exact quote.
Courtyard buildings in Chicago rarely have standard duct layouts. Video inspection tells you which runs are shared, which are abandoned, and where the real contamination sits before any cleaning starts. That means we clean what needs cleaning and do not charge you for square footage of duct that is not connected to anything. The camera is the only reason to trust a duct cleaning estimate, and we include it on every visit.
Service Areas Near Chicago
We serve the full Chicago metro, including the bungalow belt neighborhoods of Portage Park, Clearing, and Marquette Park, along with nearby areas that share similar pre-war housing stock. If you are outside our immediate coverage, check our Lennox service in Brooklyn or Lennox service in Houston pages for comparable service in those cities.
Book Your Lennox Service in Chicago Today
Every job starts with a camera and a written price. Before-and-after photos are standard on every visit, and our 365-Day Done Right Promise means the work is accountable long after the truck leaves. Call (806) 606-6902 for a free estimate.
Written by Tomas Reyes, Owner & Lead Technician at CleanRun Air Duct Cleaning, serving Chicago since 2013.