Fast, Reliable Duct Repair & Sealing Across Albany Park
Most duct repair calls we get from Albany Park aren’t about new systems failing. They’re about 80-year-old trunk ducts that were never built for forced air in the first place. If you’re in a prewar bungalow or two-flat near Lawrence Avenue, Kedzie, or Kimball, there’s a fair chance your ductwork started life feeding a coal-fired gravity furnace and got patched into a blower system sometime in the 1950s or 60s. That history matters. We know because we’ve been crawling through Albany Park basements since 2012, and our Duct Repair & Sealing team has seen what these converted systems need. Call (877) 502-3903 and we’ll send someone out today. Most jobs finish in a single visit.
Why Bellows Air Duct & Vent Co. of Chicago Is Albany Park’s Preferred Duct Repair & Sealing Company
We’ve worked Albany Park long enough to know which bungalows on Sawyer have the original octopus-furnace trunk lines still hanging in the basement, and which two-flats near Pulaski need extra care because the mid-century conversion left gaps big enough to pull in rodent droppings and soot. Ray Dempsey built this company on showing up where we say we’ll show up, and that hasn’t changed in 42 years.
Our Albany Park customers call back because we don’t bait-and-switch. The price we quote on the phone is the price on the invoice. Every job gets camera-inspected before and after, so you see what we see. Our 90-Day Done Right Promise is stamped on every repair: if it’s not right, we make it right. No forms to fill out, no arguments.
Calls are answered by a live person, 24 hours a day. Not a voicemail tree. Not an app. A real person at our office who can get a background-checked, uniformed technician to your Albany Park home fast.
Our Duct Repair & Sealing Services in Albany Park
Mastic Sealant for Corroded Joints
In Albany Park, many vintage bungalows still have the original 8-10 inch diameter sheet-metal trunk ducts from the mid-century gravity-to-forced-air conversions, which are notoriously hard to seal because their crimped joints have corroded over 80+ years and often require custom-fabricated mastic patches rather than standard tape. We don’t slap foil tape on these and call it done. Our technicians apply professional-grade mastic sealant, sometimes in layers, to bridge gaps that tape can’t hold. The result is a sealed joint that lasts through Chicago’s temperature swings, from 90°F summer humidity to single-digit winter cold.

Metal Duct Repair for Flood-Damaged Runs
Albany Park’s proximity to the North Branch of the Chicago River has historically made basement flooding a recurring problem. After even a minor flood event, we’ve found that lower sections of metal ductwork rot out while the upper runs stay sound. We recently sealed a 1926 two-flat on Lawrence Avenue near Kildare where the old trunk duct had a 3-foot gap at the seam that was pulling in basement air and soot. Using Rotobrush tools and mastic sealant, we closed all leaks, then insulated the exposed runs to prevent the sweating that had caused recurring mold problems after spring rains. We repair what can be repaired and replace only what must be replaced. That’s the square deal.

Flex Duct Repair
Some Albany Park homes have had flex duct added in later renovations, especially in attic spaces or additions. Flex duct crushes, tears, or disconnects at the collar. We repair or replace damaged sections with properly sized flex, secured with mechanical fasteners and sealed with mastic, not tape alone. In older Albany Park housing, we often find flex duct that was installed as a quick fix decades ago and is now brittle from age.

Duct Insulation for Unsealed Basements
Oversized uninsulated trunk lines in unsealed Albany Park basements sweat in humid summers. That moisture drips onto Aprilaire filters, shorts out electronic air cleaners, and creates the damp conditions that let mold take hold after spring rains. We insulate exposed duct runs with proper wrap, sealed at every seam, so your system moves air without sweating.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Albany Park
We carry parts and equipment from Rotobrush, Nikro, Honeywell, and Aprilaire, the same brands serious HVAC contractors specify for their own jobs. For Albany Park’s older housing stock, that parts availability matters. A corroded joint on a 1930s trunk line doesn’t always match modern standard sizes. Having the right mastic, the right insulation wrap, and the right fittings on the truck means we finish in one visit instead of two. We don’t make you wait while we order parts.
Common Duct Repair & Sealing Problems We See in Albany Park Homes
- Corroded seam joints on original gravity-furnace trunk ducts. Standard duct tape cannot bridge these gaps. The crimped joints have corroded over 80+ years and require mastic or custom sheet-metal patches to seal properly.
- Flood-damaged duct runs near the North Branch. Standing water from basement flooding rots lower sections of metal ducts, making local replacement necessary rather than simple sealing. We see this most often in homes within a few blocks of the river.
- Oversized uninsulated trunk lines in unsealed basements. These sweat in humid summers, causing moisture that shorts out electronic air cleaners or damages Aprilaire filters. Insulation is the fix, not just cleaning.
- Layered debris accumulation from coal soot to modern dust. Albany Park’s converted gravity-furnace systems have accumulated 80-100 years of dust, soot residue, and pest debris. Cleaning alone won’t fix gaps; sealing is required to stop the system from pulling in new contamination.
Pricing for Duct Repair & Sealing in Albany Park, IL
We’re plain about costs because nobody likes a surprise on the bill. A typical mastic sealing job for corroded joints in an Albany Park bungalow runs $280-$520, depending on how many feet of trunk line need treatment and whether we need to fabricate custom patches. Metal duct repair for flood-damaged lower sections usually falls between $340-$680. Full duct insulation for exposed basement runs ranges $450-$890 for most Albany Park homes. Small repairs, like a single joint or register collar, start around $180.
What moves the number: accessibility (how tight is your basement?), extent of corrosion or damage, whether we need to cut and replace sections versus seal in place, and whether insulation is added. We disclose the full price before we lift a single tool. No bait coupons, no price changes at the door. Mention our standing offer: $50 off any repair over $250. Seniors and veterans receive a permanent 5% discount. Call (877) 502-3903 for a free estimate.
We Also Serve Cities Near Albany Park
Our technicians cover Albany Park and the surrounding neighborhoods daily. If you’re in Albany Park proper or nearby Lincoln Square, Avondale, Uptown, or Edgewater, we’re already in the area. Same response times, same upfront pricing, same 90-Day Done Right Promise.
Serving Albany Park, IL - Our Local Coverage Area
We’re based in the Albany Park 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 - Duct Repair & Sealing in Albany Park
Yes, in most cases we can seal original trunk ducts without full replacement. We apply multiple layers of professional-grade mastic sealant to bridge corroded crimped joints, and we fabricate custom patches where gaps are too large for tape. Call (877) 502-3903 for a free inspection and exact quote.
It depends on whether the water damaged the duct material itself. If metal ducts have rotted through at the bottom, cleaning won’t fix it; we need to cut out the damaged section and replace it. If the ducts are intact but contaminated, thorough cleaning plus sealing prevents recurrence. We camera-inspect to tell the difference before quoting. Call (877) 502-3903.
Yes, we repair or replace damaged register springs and hardware. This is a quick fix, usually under $150, and we handle it in the same visit if we’re already doing ductwork. Call (877) 502-3903 to schedule.
No. Standard duct tape fails on metal ductwork, especially in Albany Park’s temperature extremes. We remove old tape and apply mastic sealant, which is the only method that lasts on corroded joints. Peeling tape is often a sign the joint underneath has corroded worse than it looks. Call (877) 502-3903 and we’ll assess it properly.
Yes, a gap at the plenum connection pulls unfiltered basement air directly into your system, bypassing the filter entirely. In Albany Park’s older homes, that often means soot, rodent debris, and mold spores circulating through every room. We seal plenum gaps with mastic and mechanical fasteners, and we can usually do it same-day. Call (877) 502-3903.
Ready to stop losing heated and cooled air through gaps that never should have been there? Call Bellows Air Duct & Vent Co. at (877) 502-3903 for a free estimate. We’ll show you what we find, quote the honest price before we start, and stand behind the work for 90 days. That’s how we’ve done it in Albany Park for over 42 years.
Written by Ray Dempsey, Owner at Bellows Air Duct & Vent Co., serving Albany Park since 2012.