Rotobrush Duct Repair & Sealing in Chicago: What to Know First
We provide independent Rotobrush duct repair and sealing in Chicago, and most calls are handled same day or next day with the price shown before we start. A typical Rotobrush duct sealing job runs $280-$520 depending on access and how far the leak has spread. We are not affiliated with or authorized by Rotobrush - we are an independent Rotobrush service provider - which means we source the right parts for your system without markup games.
This page is for Chicago homeowners who bought a Rotobrush air duct cleaner or full HVAC cleaning system and now need the ductwork itself repaired, sealed, or insulated. Maybe the flex duct pulled loose from the collar, or the mastic sealant on your metal trunk line has dried out after twenty Chicago winters. Whatever the situation, call (877) 502-3903 for a free estimate. We will tell you what we found and what it costs before we lift a tool.
How Rotobrush Products Fail - and How We Fix Them
- Beast series flex duct collar separation. The Beast and its compact cousin, the BrushBeast, move serious air through smaller-diameter flex duct in Chicago bungalows and two-flats. The vibration eventually works the collar loose from the main trunk, especially in homes near the lake where humidity swings hard between seasons. We re-secure with mechanical fasteners and fresh mastic, not tape that will peel in six months.
- BrushBeast HD metal duct seam gaps. The HD’s higher static pressure exposes weak points in older galvanized trunk lines, particularly in pre-1970s Chicago frame houses in neighborhoods like Portage Park or Austin. We spot the gaps with camera inspection, then seal with fiberglass-reinforced mastic rated for the pressure that unit generates.
- Rotobrush aiR+ air handler connection leaks. The aiR+ series is built for whole-home cleaning, but its plenum connections often leak where the transition meets existing ductwork. We fabricate custom transitions when the OEM part does not match the odd angles found in Chicago’s vintage brick bungalows.
- Flex duct compression in crawl spaces. Rotobrush portable units get dragged through tight Chicago crawl spaces in Old Town and Lincoln Park greystones. The flex duct gets kinked or crushed against joists. We replace the damaged section with properly supported flex duct and add protective sleeves where the route is tight.
- Insulation degradation on exterior duct runs. Chicago’s freeze-thaw cycles destroy duct insulation on any exterior wall run, and Rotobrush systems with their higher airflow make the problem worse by forcing conditioned air through compromised thermal barriers. We strip and re-insulate with foil-faced fiberglass, sealed at every seam.
Our Rotobrush Duct Repair & Sealing Process
- 1
Call and schedule. A live person answers, 24 hours a day. We book a window and stick to it.
- 2
Camera inspection. We run a duct camera before touching anything. You see what we see - collapsed flex, separated collars, or dried mastic - and we explain what it means without turning it into a sales pitch.
- 3
Parts decision. We stock Rotobrush-compatible collars, transitions, and flex duct. When OEM parts are back-ordered from the Louisiana warehouse, we use quality aftermarket equivalents that meet the same pressure and temperature specs. We tell you which we are using and why.
- 4
The repair. We reseal, replace, or insulate depending on what the camera showed. Metal ducts get mastic and fiberglass mesh. Flex duct gets proper supports so it does not sag. Every seam is sealed before we close up.
- 5
Post-repair test. We run the Rotobrush unit and check static pressure and airflow at the registers. The numbers should match or improve from where we started.
- 6
Cleanup and guarantee. We haul away old material and leave the work area as we found it. The 90-Day Done Right Promise goes into writing before we leave. We have been doing this long enough to know what clean looks like - and we do not leave until it gets there.
What Rotobrush Duct Repair & Sealing Costs in Chicago
| Service | Typical Range |
|---|---|
| Single flex duct section repair/replacement | $180-$290 |
| Metal duct seam sealing with mastic (per 10 ft) | $220-$340 |
| Rotobrush plenum transition repair | $280-$420 |
| Exterior duct run re-insulation | $340-$520 |
| Full trunk line reseal (typical Chicago bungalow) | $580-$890 |
What moves the price: how much of the duct is accessible without cutting drywall, whether we need to match odd vintage sizing common in Chicago’s 1920s construction, and if the Rotobrush unit itself needs repositioning to reduce strain on the connection. We show you the exact number before we start. No bait coupons, no price changes at the door. Call (877) 502-3903 for a free estimate - estimates are free, and we honor our standing offers including $50 off any repair over $250 and a free second opinion on any written estimate.
Why Chicago Homeowners Call Bellows Air Duct & Vent Co. of Chicago for Rotobrush Work
Ray Dempsey started this company in 1984, and we have spent over 42 years learning what fails in Chicago’s particular mix of old frame houses, brick bungalows, and converted greystones. We know Rotobrush equipment because we have repaired the ductwork behind it in homes from Edison Park to South Shore. Our technicians are background-checked, uniformed, and trained on Rotobrush-specific pressure characteristics - not just generic HVAC.
We also service Lennox, Trane, and Carrier systems, so when your Rotobrush is part of a larger setup, we do not hand you off to another contractor. The 90-Day Done Right Promise means if the seal fails or the repair does not hold, we return at no charge with no paperwork required. Calls are answered by a live person, 24/7. We will be there when we say.
FAQs
No. Rotobrush warranties cover their equipment, not the ductwork in your home. As an independent Rotobrush service provider, we use warranty-safe practices on the equipment itself and document our work with photos. If you have a concern about a specific Rotobrush unit still under warranty, call us at (877) 502-3903 and we will review the serial number before we start.
We stock common Rotobrush-compatible collars, flex duct, and transition fittings at our Chicago warehouse. For OEM-specific parts from Rotobrush’s Louisiana facility, transit to Chicago is typically 2-3 business days. We keep quality aftermarket equivalents on hand for urgent jobs and will tell you which route we are taking. Call (877) 502-3903 to check current stock.
Duct repair is almost always the cheaper path unless your ductwork is asbestos-insulated or structurally collapsed. A typical Rotobrush duct sealing runs $280-$520, while replacing the connected equipment and ductwork together starts well above that. We will show you both options if they exist, but we do not push replacement for repairable ductwork. Call for a free estimate.
Most single-leak repairs on accessible ductwork are completed in one visit. If we need to order an OEM Rotobrush transition or cut into finished walls, we schedule the return within 48 hours. We answer calls live 24 hours a day at (877) 502-3903.
We offer $50 off any repair over $250, a permanent 5% senior and veteran discount, and a free second opinion on any written estimate from another contractor. The $89 seasonal tune-up is also available if you want the full system checked while we are there. Call (877) 502-3903 to apply any offer to your estimate.
Ready to get your Rotobrush ductwork sealed right? Call (877) 502-3903 for a free estimate. We will answer live, schedule a window that works, and show you the price before we start. No bait, no surprises, no paperwork if something needs fixing - just a square deal and a repair done right the first time.
Written by Ray Dempsey, Owner, Bellows Air Duct & Vent Co. of Chicago at Bellows Air Duct & Vent Co. of Chicago, serving Chicago and nearby areas.