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.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
See the difference
Before
After
Before
After
Before
AfterHow Much Does Air Duct Cleaning Cost in St. Louis?
Air duct cleaning in St. Louis typically costs $350 to $700 for a standard single-family home, with most projects landing around $475. That range covers a whole-house cleaning with professional extraction equipment, and the written estimate you receive before any work begins sets the final price. Homes with multiple HVAC systems, heavy renovation dust, or ductwork that needs repair can run higher.
We’re Bellmont Air Duct Cleaning. We specialize in indoor air quality work with professional-grade Rotobrush and Nikro extraction systems, the same equipment used by IAQ contractors, and we can diagnose and fix compromised ductwork on the same visit. Our technicians have up to 9 years of experience. The prices below are typical estimates for the St. Louis market in 2026, not quotes for your specific home.
Key takeaways:
- Standard whole-house duct cleaning in St. Louis: $350-$700
- Dryer vent cleaning: $125-$250, a separate service that matters for fire safety
- Air duct repair, when cleaning uncovers leaks or damage: $250-$900 depending on scope
- The written estimate is free, and it sets the final price. No service-call or trip charges.
Air Duct Cleaning Cost Breakdown (2026)
Here’s how the numbers break down by job type and home size. Treat these as typical ranges for the St. Louis metro, not a fixed menu. Every home’s duct layout is different, and the free written estimate reflects what’s actually in your walls.
| Service | Typical 2026 Price Range | Notes |
|---|---|---|
| Whole-house air duct cleaning (1 HVAC system, up to 1,500 sq ft) | $350 – $550 | Full extraction on supply and return lines, registers cleaned and reset |
| Whole-house air duct cleaning (1,500 – 2,500 sq ft) | $450 – $650 | More runs, more registers, more access time |
| Whole-house air duct cleaning (2,500+ sq ft or two systems) | $600 – $900 | Two-zone homes in the older suburbs often fall here |
| Dryer vent cleaning | $125 – $250 | Longer or roof-terminated vents sit at the top of the range |
| Air duct repair (per job) | $250 – $900 | Depends on the number of bad joints, crushed sections or disconnected runs |
| HEPA containment setup for renovation dust or heavy debris | $100 – $250 | We carry Abatement Technologies equipment for proper containment |
| Register and grille cleaning (per unit) | $8 – $20 | Often included at no extra charge in a full cleaning |
| Blower and coil area cleaning (add-on) | $75 – $200 | Worth adding if the air handler is dusty or you’ve never had it looked at |
What pushes the price up: square footage, the number of HVAC systems, and how accessible the ductwork is. What pulls it down: a smaller home, a single system, and a layout where the runs are easy to reach. A two-story brick house in Holly Hills with a finished basement and a second system costs more to clean than a single-story ranch in Affton, and that’s mostly about time and equipment reach, not markup.
If you want the full picture of what a cleaning visit actually involves, the air duct cleaning page walks through each step. For a free written estimate on your home, call (877) 349-6189.
What Affects Air Duct Cleaning Pricing in St. Louis
St. Louis has some specific realities that move the number. Here’s what we weigh when we put a quote together.
- Home age and duct material. A large share of St. Louis housing stock was built before 1960, and older homes often have sheet metal trunk-and-branch ductwork with many short runs. That’s more access points to set up and more work to reach every branch. Newer flexible duct in places like St. Peters or Wentzville is usually faster to clean, but it can also be easier to crush or sag, which sometimes turns a cleaning into a small repair as well.
- Basement and crawlspace access. With so many St. Louis homes built over a basement or crawlspace, the visible ductwork is often the easiest part of the job. The cost driver is what’s tucked in soffits and chases between floors, where we need to create access carefully.
- Humidity and what it does over time. St. Louis summers are humid, and a well-insulated house with an air conditioner running keeps air moving that carries dust to the ducts. Homes that have been closed up or had moisture issues can have more dust buildup, and that adds time. If you’re dealing with musty smells, tell us up front so we can plan for proper containment.
- Recent renovation or new HVAC equipment. Drywall dust, sawdust and construction debris travel through every run. A cleaning after a renovation is one of our most common calls, and it’s usually a little higher because there’s more debris to pull and we want the containment right.
- Number of HVAC systems. A two-system home means two air handlers, two sets of supply and return lines, and roughly double the labor.
- Duct condition. Disconnected runs, crushed flex, and gaps at joints turn a routine cleaning into cleaning plus repair. We handle that in one visit, which saves you from finding a second contractor.
The other factor is who you hire and what equipment they bring. A shop-vac and a brush on a drill will produce a lighter bill and a lighter result. Rotobrush and Nikro extraction pull dust out of the run rather than blowing it around the room, and Abatement Technologies containment means the dust we loosen stays contained. The system used matters as much as the price on the invoice.
How to Save on Air Duct Cleaning
There’s no coupon needed to keep the price in a reasonable place. These are the things that actually move the number.
- Get the free written estimate before you commit. The estimate sets the final price, so nothing gets added after the work starts. Call (877) 349-6189 and we’ll walk through your layout over the phone and then confirm on site.
- Bundle the dryer vent into the same visit. If it’s been more than a year since your dryer vent was cleaned, doing it alongside the duct cleaning saves a separate trip. Dryer vent cleaning addresses a leading cause of residential house fires, so it’s not a throwaway add-on.
- Clean right after a renovation, not months later. Dust that settles into ducts during construction is cheaper to extract while it’s loose and there’s still containment set up from the job. Waiting lets it settle deeper and sometimes into the air handler.
- Fix leaks when they’re found. A cleaning that finds disconnected runs and only cleans them leaves you paying twice. Our duct repair service means the fix happens the same visit.
- Don’t pay for things your home doesn’t have. If you have one system, you shouldn’t be quoted for two. Read the estimate line by line.
- Pair cleaning with air-quality knowledge. We work with Honeywell and Aprilaire systems, so if you’re thinking about filtration or humidity control, we can talk through how your ducts support it before you spend on equipment.
We also get asked about how to compare quotes. The honest answer: two quotes for duct cleaning aren’t the same product unless the equipment and the scope match. A cleaning that covers the registers but doesn’t touch the trunk lines costs less for a reason.
How Do St. Louis Duct Cleaning Prices Compare to Other Cities?
St. Louis prices generally run a bit below the national average for whole-house duct cleaning, typically in the $350-$700 range against $400-$800 in most larger metros. Labor and overhead costs in the St. Louis metro sit lower than on the coasts, and the market has plenty of homes in the 1,200-2,200 square foot range that fit the standard tier cleanly. Where St. Louis homes tend to cost more is older construction: a pre-war house in Clifton Heights with a long trunk and short branches takes more setup time than a similarly sized newer home in O’Fallon.
You’ll also see wide differences in the market because the scope varies. If a quote is dramatically lower than the range above, look at whether it includes the returns, the trunk lines, and proper containment equipment. If it’s dramatically higher, ask what specifically in your home drives it.
Is It Cheaper to Repair or Replace the Ductwork?
Repair is almost always cheaper than replacing ductwork in St. Louis. A duct repair typically runs $250-$900, while a full replacement can run several thousand dollars. Our approach is to clean and inspect first, then quote repair only for what’s actually compromised. Disconnected runs, crushed flex sections, and gaps at joints are common finds and usually fixable without tearing into ceilings. Replacement makes sense when ductwork is extensively damaged, undersized, or built with materials that no longer meet today’s standards, and we’ll tell you plainly if that’s the case. Call (877) 349-6189 for a free estimate.
FAQs – Air Duct Cleaning Cost in St. Louis
How much does air duct cleaning cost in St. Louis?
Air duct cleaning in St. Louis typically costs $350-$700 for a whole-house job, with most homes landing near $475. Two-system homes or larger layouts can run $600-$900. The written estimate sets the final price. Call (877) 349-6189 for a free quote.
Do I need to clean my ducts every year?
Not usually. Most homes do well with a cleaning every 3 to 5 years, or sooner after a major renovation, a new HVAC system, or if someone in the home has allergies. Homes with pets or heavy foot traffic may want it closer to every 3 years. Call (877) 349-6189 and we’ll tell you honestly whether you’re due.
Does duct cleaning really help with allergies?
It can, especially when a large amount of dust and debris has built up. Duct cleaning removes the source rather than shifting it around, and proper containment keeps it from resettling. Prices for a full cleaning start around $350. Call (877) 349-6189 to talk through your situation.
Can you come today?
Same-day service is often possible. We answer 24/7, and fast dispatch runs from 7am to 7pm, Sunday through Friday. Standard cleaning runs $350-$700, and you get a free written estimate before work starts. Call (877) 349-6189.
Is duct cleaning worth the money?
Yes, when there’s real buildup and the job is done with professional equipment. A cleaning in the $350-$700 range that pulls out years of dust and also catches a disconnected run is money well spent. If your ducts are clean and sound, we’ll say so. Call (877) 349-6189 for an honest assessment.
Do you use the same equipment as other companies?
Not always. We use Rotobrush and Nikro extraction systems, professional grade, plus Abatement Technologies containment. Some quotes in the $200-$300 range come from a shop-vac and a hand brush. Ask what equipment a company uses before you book.
Bellmont Air Duct Cleaning handles dryer vent cleaning and air duct repair as well, so a single visit can cover cleaning, safety, and a fix for anything found along the way. For more on how indoor air quality systems fit into your home, see our duct cleaning FAQ and our guidance on cleaning ducts alongside an HVAC service. If you’re nearby, we also work in Clayton and Chesterfield.
Ready for a number for your home? Call (877) 349-6189. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. The estimate is free, the pricing is upfront, and it’s set per job by the written estimate.
Pricing reflects the St. Louis market as of 2026. Written by the team at Bellmont Air Duct Cleaning.
What Our 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