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 HVAC Cleaning Cost in St. Louis?
HVAC cleaning in St. Louis typically runs $350 to $700 for a standard whole-house system serving an average two-story home. The low end covers a single HVAC system with accessible ductwork and moderate buildup; the high end covers larger homes with multiple returns, heavy dust, or a second system in an attic or basement. Duct cleaning and HVAC cleaning are closely related and often quoted together, since the furnace, evaporator coil, and ductwork share the same air path.
Most St. Louis homes we see fall in the $400 to $550 range. That covers a full extraction clean of the supply and return runs, the main trunk, registers, and the air handler connection point. Homes with finished basements, attic systems, or a recent renovation pushing construction dust through the ductwork land closer to the top of the range. We set the final price with a written estimate after we look at the system, not before.
Bellmont Air Duct Cleaning is a dedicated indoor-air specialist. That means the price you see is for a real extraction clean with professional-grade Rotobrush and Nikro systems, not a surface pass with a shop-vac on wheels. If we open a duct run and find it crushed, disconnected, or leaking, we can note the repair and fix it on the same visit rather than sending you looking for a second contractor.
Key Takeaways
- Standard whole-house HVAC cleaning in St. Louis runs roughly $350 to $700.
- Dryer vent cleaning is priced separately, usually $125 to $250.
- Duct repair, where needed, starts around $200 per section and is quoted on top of cleaning.
- Homes with two HVAC systems, finished basements, or recent renovations sit at the higher end.
- Free estimates are standard. Call (877) 349-6189 and we’ll price your system before any work starts.
HVAC Cleaning Cost Breakdown (2026)
| Service | Typical St. Louis range (2026) | What’s included |
|---|---|---|
| Standard HVAC cleaning (single system, average 2-story home) | $350-$550 | Supply and return runs, main trunk, registers, air handler connection |
| Large home or second HVAC system | $550-$700 | Two systems, more returns, attic or basement equipment |
| Heavy buildup or post-renovation clean | $550-$800 | Construction dust, drywall residue, extra agitation and containment |
| Dryer vent cleaning | $125-$250 | Lint removal, vent run inspection, airflow check |
| Duct repair (per section) | $200-$450 | Sealing, reconnecting, or replacing damaged runs found during cleaning |
| Coil and blower cleaning add-on | $100-$200 | Evaporator coil and blower wheel cleaned while the system is open |
What moves the number up or down? The number of HVAC systems is the biggest factor. A St. Louis home with one forced-air furnace and one air conditioner sits near the middle of the range; a home with a second system for a finished basement or a converted attic pushes into the higher bracket. Accessibility matters too. Ducts running through a finished basement ceiling, a tight attic, or behind soffits take longer to reach and contain than open runs in an unfinished space. Heavy buildup from pets, recent renovation, or a long gap between cleanings adds agitation and containment time. So does the size of the system: a 4-ton unit with more returns has more ductwork to clean than a 2-ton unit in a smaller home.
We price the whole job, not by duct count alone, because a house with six accessible registers in wide runs can take less time than a house with the same count tucked into tight attic space. A written estimate before work begins pins the number down. No surprises on the invoice.
What Affects HVAC Cleaning Pricing in St. Louis
St. Louis sits in a climate band that swings from humid Midwest summers to cold, dry winters. That back-and-forth pushes the furnace and air conditioner hard for much of the year, and the ductwork carries that load. Here’s what we see moving the price in this market.
- Number of HVAC systems. A home with a single furnace and central air sits at the lower end. A two-story with a second system for a basement or attic pushes the job into the $550 to $700 bracket. Some St. Louis homes in older neighborhoods were built with a boiler and radiator setup, then converted to forced air; those conversions can create odd duct routing that takes longer to clean.
- Attic and basement duct runs. Attic systems are common in St. Louis homes built or updated in the last thirty years. Attic and finished-basement runs take longer to access, contain, and clean safely. We use Abatement Technologies equipment to pull proper HEPA containment, and that setup takes time, which is part of what those runs cost.
- Buildup level. Pets, recent renovation, and long gaps between cleanings all add work. A home that hasn’t had the ductwork touched in a decade and has a dog or two will land higher than a home cleaned recently. Post-renovation cleans are their own category because drywall dust and construction debris settle into every joint and take extra passes to clear.
- Duct condition. If a run is crushed, disconnected, or badly leaking, cleaning alone won’t fix the airflow. Duct repair pricing runs $200 to $450 per section, quoted on top. This is the biggest reason we recommend an estimate before booking: the number on the invoice should include what the system actually needs.
- Home size and register count. A 1,800-square-foot ranch with eight registers prices differently than a 3,200-square-foot two-story with fourteen. More registers means more extraction time, more containment, and more inspection points.
- Timing and availability. Booking around your own schedule matters for comfort, not price. We don’t charge a premium for same-day work or for early mornings. The estimate is the estimate.
One local factor worth naming: homes in older St. Louis neighborhoods, especially those built before the 1970s, sometimes have ductwork that was retrofitted into a house originally designed without it. Those systems can have tighter clearances, shorter runs, and more joints, which affects both cleaning and repair pricing. It’s not a reason to skip the service. It’s a reason to get a real look at the system before you commit to a number.
How Does HVAC Cleaning Compare to Other Air Quality Work?
HVAC cleaning is duct-related work, and the price reflects that. Bellmont Air Duct Cleaning focuses on three services: air duct cleaning, dryer vent cleaning, and air duct repair. That tight menu is deliberate. We’re not a general handyman shop adding duct cleaning as an upsell. We’re the specialist you call when the air in your house feels off, when a dryer takes two cycles to dry a load, or when a recent renovation left grit in every room.
What that means for pricing is simple. If we find compromised ductwork during a clean, we can repair it on the same visit instead of leaving you to find a second contractor. The repair price is separate from the cleaning price, but it’s quoted up front, in writing, before any work begins. We also work with trusted air-quality brands including Honeywell and Aprilaire, so if your system includes a whole-house humidifier, dehumidifier, or filtration setup, we know how those components interact with the ductwork and can clean around them properly.
HVAC cleaning doesn’t cover HVAC installation, mold remediation, or general contracting. Those are outside our scope. If your estimate turns up something in those categories, we’ll tell you so you can make the right call, even though it’s not work we do.
How to Save on HVAC Cleaning
The single best way to control the price is to get the estimate before you book. We offer free estimates, so there’s no cost to have us look at the system and quote the job. Beyond that, a few practical tips make a real difference.
- Book the clean before a small problem becomes a big one. A crushed duct or disconnected run found during a $400 clean costs less than the same problem found after a season of strain on the blower. Same visit, same trip, one estimate.
- Bundle duct cleaning with dryer vent cleaning. If both need work, having them done together saves a trip. The two services are priced separately, but the schedule is one visit. Call (877) 349-6189 and ask for a combined estimate.
- Don’t clean after every renovation dust-up. A single thorough clean after the work is done costs less than two partial cleans that miss the joints and returns.
- Ask what the estimate covers. A quote that only says “duct cleaning” without naming registers, returns, trunk, and air handler connection isn’t a full picture. Ours names the scope.
- Investigate before you replace. If your system is moving less air than it used to, the issue is sometimes duct condition, not the equipment. Duct repair at $200 to $450 per section can restore airflow for a fraction of what a new system costs. A cleaning visit is the right moment to find that out.
- Keep the return vents and registers clear at home. That’s not a service we sell, but a clean filter and clear returns make a cleaning job faster and the results last longer between visits.
We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. If you want to talk through your system before you book, call and we’ll help you figure out what’s worth doing.
Is HVAC Cleaning Worth the Cost in St. Louis?
For most households, yes. Dust, pollen, pet dander, and construction debris settle through the ductwork and get pulled back into the living space every time the furnace or air conditioner runs. A thorough clean with professional-grade extraction removes that material at the source. Where it gets expensive is when a homeowner waits until the blower is straining against a crushed duct or the air handler is caked with dust. Cleaning plus repair at $600 to $1,200 is still a fraction of what a premature system replacement costs.
Homes near active construction, homes with multiple pets, and homes where someone in the household has allergies or asthma tend to notice the difference most. So do homes that just had a renovation or a new HVAC system installed. St. Louis’s humid summers and dry winters mean the system works hard. A duct clean every few years keeps the airflow where it should be and protects the equipment you’ve already paid for.
If you’re unsure whether your system needs it, call (877) 349-6189 for a free estimate. We’ll look at the system, talk through what we see, and give you a written price. No pressure and no guessing.
FAQs – HVAC Cleaning Cost
How much does HVAC cleaning cost in St. Louis?
HVAC cleaning in St. Louis typically costs $350 to $700 for a standard whole-house system, with most homes landing in the $400 to $550 range. Large homes with two systems, finished basements, or recent renovation dust push to the higher end. Call (877) 349-6189 for a free estimate on your system.
Is it cheaper to clean or replace ductwork?
Cleaning is usually cheaper than replacing ductwork, often by a wide margin. Duct cleaning runs $350 to $700 for a standard system, while duct repair runs $200 to $450 per damaged section. Full replacement is a much larger project and usually only makes sense when the ductwork is badly undersized or deteriorated throughout. We can tell you which one you’re looking at during a cleaning visit. Call (877) 349-6189 to book an estimate.
How much does dryer vent cleaning cost in St. Louis?
Dryer vent cleaning in St. Louis typically costs $125 to $250, depending on vent length, roof or wall termination, and how much lint has built up. It’s priced separately from duct cleaning. Lint buildup is a leading cause of residential house fires, so it’s worth pricing alongside your HVAC clean. Call (877) 349-6189 for a combined estimate.
Can you come today?
Same-day service is often possible. We answer 24/7 and dispatch from 7am to 7pm, Sunday through Friday, so call (877) 349-6189 and we’ll tell you what’s open. A call outside dispatch hours is booked into the next opening, Sunday through Friday, 7am to 7pm. Estimates are free either way.
Why is my HVAC cleaning quote higher than another one I got?
Quotes vary because scope varies. A quote that doesn’t name the registers, returns, main trunk, and air handler connection isn’t priced for the same job. The St. Louis average runs $350 to $700, and a quote well below that range usually means fewer items in the scope or consumer-grade equipment instead of professional extraction. We quote what we’ll actually do. Call (877) 349-6189 and we’ll walk you through the estimate line by line.
Do you charge more for same-day or early morning work?
No. The written estimate sets the price. There’s no premium for same-day service or early morning dispatch. Call (877) 349-6189 and we’ll price the job the same regardless of timing.
Get a Free St. Louis HVAC Cleaning Estimate
If you’re ready to know what HVAC cleaning will cost for your home, call (877) 349-6189. We’ll look at your system, talk through what we find, and give you a written estimate before any work starts. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. Bellmont carries professional-grade Rotobrush and Nikro extraction systems and Abatement Technologies equipment for proper HEPA containment, and we can fix compromised ductwork on the same visit as the clean. That’s the whole point of a specialist. You get one company that solves the duct problem, not two that pass it back and forth. For more about air duct cleaning across the area, see our St. Louis service page, and for the full company overview, visit Bellmont Air Duct Cleaning.
Pricing reflects the St. Louis market as of 2026. Bellmont Air Duct Cleaning offers free estimates – call (877) 349-6189.
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