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.
Air Duct Cleaning Company in St. Louis, MO
Most calls we get from St. Louis homeowners start with a symptom, not a service. A room that never warms up. A rattle in the wall. Dust settling hours after you cleaned. In a city where so much of the housing stock went up before 1950, those symptoms usually trace back to ductwork that’s been quietly failing for decades: seams that have separated, joints that were never sealed, galvanized runs that have been through countless heating and cooling cycles. Bellmont Air Duct Cleaning works on that problem specifically. We run professional-grade Rotobrush and Nikro extraction systems, we contain dust with Abatement Technologies equipment, and we repair what we find rather than handing you a second contractor’s number. Call (877) 349-6189 for a free estimate.
Why St. Louis Homes Are Different
The Mississippi River valley sets the terms here. Summers are hot and humid, winters are cold, and the HVAC system runs nearly year-round – which means river-valley moisture gets pulled through the ducts along with everything else. That moisture is why mold growth inside ductwork is a real finding in St. Louis and not a scare tactic. Spring pollen bursts and fall leaf decay push allergens into outdoor air intakes on top of it, and the city’s dense tree canopy keeps both seasons intense.
Then there’s the housing. Most St. Louis city homes are brick, built before 1950, and a good number still carry original galvanized steel ductwork. Some of it holds decades of dust, rust, and remnants of old coal-forced-air systems that were converted rather than replaced. In Soulard and Benton Park, we regularly find duct runs retrofitted through historic brick walls with barely any clearance, which is why rotary brushes and a careful hand matter more here than raw suction. Newer suburbs like Chesterfield are a different job entirely: flex duct systems that sag, collect debris at the low points, and lose their shape over time.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Our Main St. Louis Services
Two jobs account for nearly every call we take in St. Louis: cleaning out what’s accumulated in the ducts, and clearing the dryer vent before it becomes a hazard.
Air Duct Cleaning in St. Louis
Cleaning in St. Louis is rarely a quick surface pass, because the ductwork itself is often older and more complicated than what’s in newer construction. We hook up HEPA-filtered containment so dislodged dust leaves the house instead of settling on your furniture, then work the full run with rotary agitation. In brick homes, that means navigating tight turns and short clearances without scoring the masonry. In Chesterfield and the western suburbs, it means dealing with sagging flex duct that traps debris in places a basic vacuum will miss. We photograph the ducts before and after so you can see the difference for yourself. Details are on our Air Duct Cleaning in St. Louis page.
Dryer Vent Cleaning in St. Louis
Lint buildup in a dryer vent is a leading cause of residential house fires, and St. Louis homes with long vent runs or vents that exit through a brick wall are especially prone to it. The warning signs are easy to miss: clothes that need a second cycle, the dryer body running hot to the touch, or a load that comes out damp at the end. We clear the full run from the dryer connection to the exterior hood, then confirm airflow so the machine is breathing the way it should. If you’ve noticed any of those signs, that’s the moment to book. See Dryer Vent Cleaning in St. Louis.
Air Duct Repair in St. Louis
Air duct repair is the most common reason we’re called to older St. Louis homes. The combination of pre-1950s brick construction, original galvanized steel duct runs, and year-round HVAC operation means joints separate, seams open, and connections loosen as the metal expands and contracts through hot summers and cold winters. Add river-valley humidity feeding mold growth inside the ducts, and a small leak becomes a bigger air-quality problem fast. We diagnose the actual failure and correct it – Air Duct Repair is a core service for us, not a referral.
Ductwork Repair
Signs you need it
You’re seeing higher energy bills without a clear cause, rooms that don’t hold temperature, visible dust streaks at the registers, or a whistle or rattle that shows up when the system kicks on.
What it costs in St. Louis
Ductwork repair in St. Louis typically runs about $150 to $450 for a single section, with the final figure set by the written estimate.
How we do it
We map the run, isolate the failed seam or joint, seal it with the appropriate mastic or tape rated for ductwork, and pressure-check airflow afterward.
Air Duct Replacement
Signs you need it
Sections of duct that have rusted through, collapsed flex duct, or original galvanized runs so degraded that patching won’t hold are the usual drivers.
What it costs in St. Louis
Replacing duct runs in St. Louis typically falls between $400 and $1,800 depending on length and access, with the written estimate setting the price.
How we do it
We remove the failing section, size the replacement to the system’s actual airflow, install it with sealed connections, and verify static pressure before we leave.
What Air Duct Repair Costs in St. Louis
| Item | Typical range in St. Louis |
|---|---|
| Single duct seam or joint repair | $150 – $450 |
| Duct section replacement | $400 – $1,800 |
| Full duct replacement, larger system | $1,200 – $3,500 |
Do I need a permit to repair ductwork in St. Louis?
Most city building departments require a permit for duct replacement or new ductwork installation, though a repair to an existing run usually doesn’t. Ask the St. Louis building department before substantial work, and ask us and we’ll tell you what the job typically triggers.
Can you repair ducts and clean them on the same visit?
Yes. That’s the practical advantage of using a duct specialist rather than a generalist. We clean the system, find the failed seam or sagging section during the work, and fix it in the same appointment so dust isn’t reintroduced through a fresh leak.
Brands We Service in St. Louis
We work with air-quality brands including Honeywell, Aprilaire, and Guardsman, along with the Rotobrush, Nikro, and Abatement Technologies equipment we run on every job. We don’t stock parts for any brand, so turnaround depends on the part and the job. You can see the full list on our brands page.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Cleaning Company in St. Louis, MO
| Service | Typical range in St. Louis |
|---|---|
| Ductwork repair, single section | $150 – $450 |
| Duct section replacement | $400 – $1,800 |
| Full duct replacement | $1,200 – $3,500 |
| Air duct cleaning, whole system | $350 – $800 |
| Dryer vent cleaning | $100 – $250 |
Two things push the price up in St. Louis: the age and condition of the ductwork, and access. Tight retrofitted runs in a Soulard or Benton Park brick home take longer than an open flex run in Chesterfield, and that shows up in the estimate. The price is per job, agreed in writing before any work starts – no per-vent pricing, no surprises on the invoice.
Neighborhoods We Serve in St. Louis
We work across the city and out into the surrounding suburbs, and the housing changes with every neighborhood. A job in Soulard or Benton Park often means historic brick and tight duct clearances. A job in the Central West End or Tower Grove tends to mean older systems that have been added to over the years. Out west, in places like Chesterfield, it’s newer flex duct that’s sagging or debris-clogged. Response time depends on the day and the job queue, not the neighborhood – call and we’ll give you the next opening.
- Soulard
- Benton Park
- Central West End
- Tower Grove
- Chesterfield
Service Area – Cities Near St. Louis
We also work in the cities that sit around St. Louis, and the ductwork usually tells you which side of the line you’re on. Clayton, MO has a mix of older homes and newer construction. University City, MO leans toward pre-war brick with original duct runs. Webster Groves, MO has a lot of homes where the ducts have been through several HVAC upgrades. Jennings, MO has older housing stock with a lot of galvanized steel still in service. Call and we’ll confirm the next dispatch opening for your area.
Serving St. Louis, MO – Our Local Coverage Area
We serve St. Louis and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning Company in St. Louis
It depends on the day and the job queue, not the neighborhood. We answer 24/7 and dispatch Sunday through Friday, 7am to 7pm, so call and we’ll give you the next opening. Same-day work is often possible.
Permits typically apply to replacement and new installation, not to repairs of existing runs. HOA rules vary by neighborhood and do occasionally restrict exterior vent changes. Check with your HOA and the city building department, and we’ll tell you what the job usually triggers.
We cover the city and the surrounding suburbs, including Clayton, University City, Webster Groves, and Jennings. If you’re unsure whether your address falls in our area, call (877) 349-6189 and we’ll confirm.
If your ducts are leaking, sagging, or just overdue, it’s worth getting a straight answer. Call (877) 349-6189 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. Our technicians have up to 9 years of experience, and the written estimate you get before any work starts is the price you pay.
What happens when you call
- 1A real person answersNo phone trees. Talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you. The visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What St. Louis Customers Say
"Did the dryer vent while they were here for a small add on price. The dryer now finishes a load in one cycle instead of two."
- Malik Bryant"Quoted per system rather than the bait and switch per vent pricing everybody else in town uses. The number I was told on the phone was the number on the invoice."
- Whitney Sutton"Fair price and thorough work. They ran about an hour and a half past the estimated finish time, so don't schedule anything tight after."
- Steve Norris