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 Longmont, CO
Air duct repair in Longmont usually starts with a seam that has been leaking for years before anyone notices. The housing stock tells you why: 1950s to 1970s ranch homes on original galvanized trunk lines, historic bungalows with panned returns, and newer east-side builds running flexible duct. Longmont’s high-desert climate cycles those systems through long heating and cooling seasons, so joints fail slowly and quietly. We clean with Rotobrush contact-cleaning and Nikro negative-air/HEPA equipment, and we repair the ductwork instead of cleaning around a known leak. Call (877) 550-7147 to set up a free estimate.
Why Longmont Homes Are Different
Longmont sits on the front edge of the Denver-Julesburg Basin’s oil and gas activity and on clay-rich Front Range soil. That combination matters inside the duct system. Spring dust storms and dry winter winds push fine calcareous grit into return ducts in a way humid or coastal cities never see, so the load we pull out of a Longmont return is often mineral dust first and pet hair second. The dry air here also keeps dust mites down, which shifts the conversation from allergens to abrasion: grit moving through a joint wears it.
Then there’s the housing. The core of the city, ZIP 80501 and 80503, is dense with post-WWII single-story ranches and slab-on-grade builds whose rectangular and round galvanized trunk lines have leaky taped seams. Out toward 80504 on the Weld County side, 1990s to 2010s subdivisions brought flexible-duct installs with their own connection problems. Old Town and the Historic West Side hold pre-1930 homes where rigid, small-diameter ducts and panned returns are the norm. Clay soil shifting foundations makes those old seams worse, especially in the bungalows and 1950s ranches along the numbered avenues.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Our Main Longmont Services
Two services come up most when Longmont homeowners call us about the air in their homes.
Air Duct Cleaning in Longmont
Cleaning a Longmont system means dealing with mineral grit as much as dust. After the late-spring cottonwood seed storm coats every intake screen, fine fluff and windblown soil ride straight into the returns, and the long heating and cooling seasons keep the blower moving it around most of the year. We run Rotobrush contact-cleaning through each branch line and hold the work area under negative pressure with a Nikro HEPA unit so loosened material leaves the house rather than settling back into it. Air Duct Cleaning in Longmont covers the full process.
Dryer Vent Cleaning in Longmont
We treat dryer vent cleaning as a fire-safety service, not an add-on. In older Longmont homes the vent run is often longer and more convoluted than the builder intended, with flexible foil sections that sag and collect lint at every low point. Restricted airflow makes the dryer run hot and work harder. We clear the full run, confirm the damper opens and closes as it should, and show you what came out. Details are on our Dryer Vent Cleaning in Longmont page.
Air Duct Repair in Longmont
Air duct repair in Longmont is mostly a story about time and materials. The original galvanized trunk lines in 1950s-70s ranches have been expanding and contracting through long, hard heating and cooling seasons since they went in, and taped seams give out slowly, not all at once. That’s why repair belongs alongside cleaning rather than after it. Our Air Duct Repair work identifies the failed joint, disconnected boot or crushed run and fixes it, so the next cleaning isn’t chasing a leak that’s still open.
Ductwork Repair
Signs you need it
Watch for rooms that never heat or cool evenly, visible tape peeling at trunk joints, dust settling on shelving near a register, or a run that whistles when the blower starts.
What it costs in Longmont
Typical ductwork repair runs $180 – $650, depending on how many joints or runs need attention and whether the duct is accessible from a basement or crawlspace.
How we do it
We trace the system from the air handler outward, pressure-check suspect runs, reseal or rebuild the failed section with proper duct materials, and confirm airflow at the registers before we leave.
Air Duct Replacement
Signs you need it
Replacement comes up when the duct is crushed beyond repair, a flexible run has collapsed in the attic, or a panned return in an older Longmont home can’t be sealed well enough to hold pressure.
What it costs in Longmont
Air duct replacement typically lands between $450 and $1,800 for the affected runs, sized by length, access and material.
How we do it
We measure the existing system, remove the failed duct, install sized replacements with sealed connections, and recheck static pressure and airflow at the registers.
What Air Duct Repair Costs in Longmont
| Item | Typical range in Longmont |
|---|---|
| Ductwork repair | $180 – $650 |
| Air duct replacement | $450 – $1,800 |
| Duct sealing and joint repair | $180 – $450 |
Can duct repair in Longmont happen at the same time as cleaning?
Yes. When we find a failed joint during cleaning, we can repair it before finishing, so the system isn’t cleaned and then left leaking. We agree the scope and the flat price with you before the repair starts. Call (877) 550-7147 for a free estimate.
Why does my 1950s ranch in Longmont lose airflow to the back bedrooms?
Because the trunk line or a branch run has usually lost its connection somewhere between the furnace and those rooms. Original galvanized duct with taped seams is the common culprit, and a pressure check tells us where the loss is within minutes.
Brands We Service in Longmont
We work on the equipment Longmont homes already run, including Honeywell and Aprilaire whole-home filtration systems, and we use Rotobrush and Nikro equipment on the job. We don’t claim stocked parts or a local warehouse; replacement parts are ordered to the job, so turnaround depends on the part. See our brands for the full list.
See the difference
Before
After
Before
After
Before
AfterPricing for Air Duct Cleaning Company in Longmont, CO
| Service | Typical range in Longmont |
|---|---|
| Air duct cleaning, whole system | $350 – $700 |
| Dryer vent cleaning | $120 – $250 |
| Ductwork repair | $180 – $650 |
| Air duct replacement | $450 – $1,800 |
| Duct sealing and joint repair | $180 – $450 |
| Return duct cleaning | $200 – $450 |
| Whole-home filtration service | $200 – $500 |
| Guardsman protective treatment | $150 – $350 |
What pushes price up in Longmont is access and scope: a slab-on-grade ranch with duct in a tight attic, or a historic home with panned returns, takes longer than an open basement run. You get one flat price per system, agreed before work starts, and the written estimate sets the final number.
Neighborhoods We Serve in Longmont
We work across Longmont, from the numbered avenues of Old Town and the Historic West Side to the newer subdivisions on the east side. Dispatch runs from 7am to 7pm, Sunday through Friday, and we’re closed Saturday. If you call outside dispatch hours, we book you into the next opening. Typical neighborhoods we cover include:
- Old Town
- Historic West Side
- The 80503 neighborhoods west of downtown
- East-side subdivisions in 80504
- The ranches along the numbered avenues
Service Area – Cities Near Longmont
Longmont sits between Boulder and the Weld County line, and we cover the towns around it. If you’re just outside the city, we can talk through what your system needs and whether it fits the same scope. We also work in Boulder, CO, Platteville, CO, Thornton, CO, and Westminster, CO. The Boulder Duct Cleaning main page covers how we approach systems across the Front Range.
Serving Longmont, CO – Our Local Coverage Area
We serve Longmont 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 Longmont
Most routine duct cleaning and repair doesn’t need a permit, but replacing duct runs or changing the system layout may. HOA rules can also apply in some subdivisions. Ask the city’s building department and your HOA before the work is scheduled, and we’ll work to whatever the answer is.
We answer 24/7, and dispatch runs from 7am to 7pm, Sunday through Friday, closed Saturday. Same-day scheduling is often possible when a slot is open. A call outside dispatch hours is booked into the next opening, and the estimate is always free.
Yes. We serve Longmont from Old Town and the Historic West Side out through the east-side subdivisions in 80504. If your address is just past the city line, call and we’ll confirm coverage before booking anything.
Call (877) 550-7147 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. You get one flat price per system agreed before work starts, before-and-after photos of your own ducts, and our technicians have up to 9 years of experience.
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 Longmont Customers Say
"Ran a negative air machine on the whole system rather than the shop vac on a stick that the cheap outfit down the road uses. Showed me the before and after photos from inside the trunk line and it was genuinely disgusting."
- Megan Parker"Found a disconnected run in the crawlspace while they were in there and told me about it rather than cleaning around it."
- Marisol Castillo"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."
- Eric Pruitt