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 Longmont?
Air duct cleaning in Longmont typically costs $350 to $700 for a standard single-family home, with most jobs landing near the middle of that range. Larger homes with multiple HVAC systems, heavy buildup, or added dryer vent work run $800 to $1,400. The number that actually matters is the written estimate, which sets your final price after we see the system.
We quote per job, not per hour, so the estimate you get is the price you pay. A free estimate takes one visit, and we’ll walk you through what we find before any work starts. Call (866) 361-9658 to set one up. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday.
Key Takeaways
- Typical air duct cleaning in Longmont: $350 to $700 for a single system.
- Multi-system homes and heavy contamination jobs: $800 to $1,400.
- Duct repair, when we find damaged sections, is quoted separately after inspection.
- Dryer vent cleaning is usually added for $125 to $250.
- Every price is confirmed in a free written estimate before work begins.
Air Duct Cleaning Cost Breakdown (2026)
The ranges below reflect what typical Longmont jobs cost across a full system – supply and return runs, registers, and the main trunk. Every line item is confirmed in your written estimate.
| Service | Typical Range in Longmont | What It Covers |
|---|---|---|
| Standard air duct cleaning, single system | $350 – $700 | Full supply and return cleaning with source removal |
| Multi-system home (two or more HVAC units) | $650 – $1,150 | Each system cleaned separately with its own equipment setup |
| Heavy buildup or post-renovation cleaning | $700 – $1,400 | Drywall dust, construction debris, extended agitation time |
| Dryer vent cleaning | $125 – $250 | Full lint removal from dryer to exterior termination |
| Duct repair (per damaged section) | Quoted after inspection | Reconnecting, sealing, or replacing failed duct sections |
| Register and grille cleaning | Included in standard service | Removal, cleaning, and reinstall of every accessible register |
What pushes a Longmont job toward the top of the range? Number of systems, how much debris is in the runs, whether the ducts are flexible or rigid, and how accessible the trunk lines are. A newer home with a single system and lightly soiled ducts sits near $350. A two-story home with a finished basement, two systems, and years of accumulation without service lands closer to the top. Add duct repair or a dryer vent job and the total climbs accordingly.
Our technicians have up to 10 years of experience, and they use duct cleaning Longmont equipment built for this work: Rotobrush brush-agitation systems paired with Nikro HEPA-vacuum extraction. That’s contact-and-capture cleaning – the brush physically dislodges the debris, and the HEPA vacuum pulls it out of the system rather than blowing it into your living space. When a job involves contamination beyond routine dust, we bring in Abatement Technologies air-filtration equipment, the same category of gear used in professional remediation work.
What Affects Air Duct Cleaning Pricing in Longmont
Longmont sits along the Front Range where dry, windy stretches push fine dust and pollen into homes for weeks at a time. That geography shapes what a typical cleaning job here looks like, and it’s one reason pricing varies from house to house.
- Number of HVAC systems. A single furnace and air handler is one cleaning setup. Two systems in a larger home mean double the equipment time, which is why multi-system homes land $650 to $1,150 instead of $350 to $700.
- Duct material and layout. Flexible duct runs through tight attic spaces and finished basement ceilings take longer to agitate and extract than straight rigid metal trunk lines. Older homes with original sheet metal and inaccessible runs can swing either direction depending on condition.
- Level of buildup. A home that hasn’t had ducts serviced in a decade carries more accumulated dust, pet hair, and construction debris than one cleaned recently. Heavier soil means longer agitation time and a larger range estimate.
- Recent renovation or construction. Drywall dust and sawdust settle into every run after a remodel. Post-renovation cleaning takes extra filtration and often a second pass, which pushes the job into the $700-$1,400 band.
- Accessibility. Registers under furniture, returns behind appliances, and ducts routed through tight crawl spaces add time. We’ll tell you during the estimate what’s accessible and what isn’t.
- Add-on services. Dryer vent cleaning, duct repair, and filtration upgrades are quoted separately. Bundling them into one visit avoids a second setup and usually costs less than booking them on separate calls.
If you’ve noticed musty odors, uneven airflow between rooms, or allergy flare-ups that track with the heating season, that usually points to a system that needs cleaning rather than a problem with the furnace itself. Our air duct cleaning service covers the full system in one visit – registers, returns, trunk lines, and the air handler housing.
What’s Actually Included in a Standard Cleaning?
Every standard job covers the same core scope: every accessible supply register, every return grille, the trunk lines, and the air handler housing. We remove and clean each register and grille, agitate the duct interior with the Rotobrush, and extract with the Nikro HEPA system until the system is clean. Then we put everything back.
What we don’t do is sweep a vacuum wand across the floor registers and call it done. Source removal is the standard, and the equipment roster is what makes it possible. Our Guardsman product line covers the sanitizing and debris-control side of the job where conditions warrant it.
If we find duct sections that have separated, collapsed, or grown mold, we tell you on the spot. We repair what we find – that’s the difference between a cleaning company and a contractor who can fix the problem. Duct repair pricing is quoted after inspection, and you’ll get a written number before any repair work starts.
When Does Duct Cleaning Cost More Than the Standard Range?
A few situations push a Longmont job out of the typical $350-$700 band. Post-remediation clearance cleaning after mold or water damage gets into the $700-$1,400 range because it requires Abatement Technologies filtration on top of the standard contact-and-capture work. Post-renovation jobs with drywall dust throughout the system fall into the same band.
Homes with two or more HVAC systems, or with long duct runs through multiple stories, sit in the $650-$1,150 range. A single story with a crawl space and one system stays near the bottom. The estimate visit answers this definitively – we don’t guess at a price over the phone and then change it on arrival.
How to Save on Air Duct Cleaning
There’s no coupon or promo code involved here. The way to keep a duct cleaning bill down is to make the job smaller and to book connected work in one visit.
- Bundle dryer vent cleaning with duct cleaning. Dryer vent cleaning alone runs $125 to $250. Booking it during the same visit saves the separate trip and setup.
- Schedule before the buildup gets heavy. A system cleaned regularly stays in the $350-$500 end of the range. A system that’s gone years without service takes more agitation and extraction time.
- Clear accessibility before we arrive. Pulling furniture off registers and making sure the air handler closet is reachable keeps the visit on schedule.
- Address small duct problems early. A separated joint or a crushed section found during a standard cleaning can be repaired in the same visit. Left alone, it can send debris into the system and turn a routine cleaning into a bigger job.
- Get a written estimate first. A free estimate is the cheapest line item you’ll get. Call (866) 361-9658 – we’ll walk through the system and give you a firm number before anything starts.
Why Equipment Changes the Price – and the Result
Two cleaners can quote $400 and produce very different results. Consumer-grade vacuums and a shop vac pull loose debris from the register, but they don’t agitate the dust stuck to the duct walls, and they don’t filter fine particles at a level that keeps them out of your home during the work. That’s why we run Rotobrush and Nikro together: brush contact dislodges what’s stuck, and HEPA extraction captures it. Contractor-grade equipment costs more to buy and more to maintain, and that’s reflected in what a real cleaning costs.
Where it makes a practical difference is a Longmont home with dry, fine dust settled into flexible runs. That dust coats the duct walls and won’t come loose with air movement alone. Brush agitation is what gets it into the airstream, and HEPA capture is what removes it.
The Upgrade Path: Filtration and IAQ
Once the ducts are clean, the next question is how to keep them that way. We supply and install Honeywell and Aprilaire filtration and indoor air quality products, so a customer can move from clean ducts to better air in a single service visit rather than finding a second contractor. The filtration upgrades are quoted separately, and the estimate covers both so you can see the whole picture at once.
Reviewing Your Estimate Before You Book
Any duct cleaning estimate in Longmont should spell out four things: the number of systems covered, whether registers and the air handler housing are included, what kind of equipment will be used, and whether the quote is a flat price or a range. If the estimate doesn’t name the equipment, ask. If it doesn’t say whether the air handler housing is included, ask that too. Our estimates are free and written, and we’ll hold to the number unless we find an issue mid-job that you approve separately.
We answer 24/7 and dispatch from 7am to 7pm, Sunday through Friday. Same-day appointments are often available. We are closed on Saturday, and a call that comes in outside dispatch hours is booked into the next opening. Book air duct cleaning with a free estimate first – call (866) 361-9658.
FAQs – Air Duct Cleaning Cost
How much does air duct cleaning cost in Longmont?
Air duct cleaning in Longmont typically runs $350 to $700 for a standard single-system home. Multi-system homes and heavy-contamination jobs land between $800 and $1,400. Call (866) 361-9658 for a free estimate – the written quote sets the final price.
Is it cheaper to clean or replace ductwork?
Cleaning is almost always cheaper than replacement. A standard cleaning runs $350 to $700, while replacing duct sections costs far more. We repair what we find – separated joints, crushed sections, failed connections – so replacement is only needed when the duct itself has failed. Call (866) 361-9658 for a free estimate.
Does dryer vent cleaning cost extra?
Yes. Dryer vent cleaning runs $125 to $250 on its own, but bundling it with a duct cleaning visit costs less than booking it separately. Dryer vent work is one of our three core services, along with duct cleaning and duct repair. Call (866) 361-9658 for a combined quote.
How long does a duct cleaning appointment take?
A single-system home typically takes two to four hours. Multi-system homes and heavy-contamination jobs take longer. The estimate visit gives you a realistic time window for your specific system. Call (866) 361-9658 to schedule – we dispatch from 7am to 7pm, Sunday through Friday.
Can you come out today?
Same-day availability is common for standard cleaning jobs. Call (866) 361-9658 – we answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday. A call that comes in outside dispatch hours is booked into the next opening.
Pricing reflects the Longmont market as of 2026. Duct Cleaning Longmont offers free estimates – call (866) 361-9658.
Written by the team at Duct Cleaning Longmont.
What Our Customers Say
"Job was done well and the house smells better. There was some dust knocked loose around a couple of the registers that I had to wipe down afterward."
- Karen Yang"My wife's allergies had been bad in this house since we moved in. It's been two months since they did the ducts and it's noticeably better. Not a miracle, but real."
- Roger Hoffman"They photographed every return and supply before starting and sent me the file afterward. No upsell to a sanitizing treatment I didn't need."
- Michael Sullivan