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.
Lennox Air Duct Cleaning in Longmont, CO
We provide independent Lennox air duct cleaning across Longmont, CO, and the one thing that sets our Lennox work apart here is this: we treat the return side and the coil cabinet as the real problem, because Longmont’s wind corridor pushes fine prairie grit through every gap in a return duct. We’re not affiliated with, authorized by or endorsed by Lennox. We’re an independent shop that works on Lennox systems every week and knows how they come apart, seal up and breathe again. Rotobrush and Nikro equipment on every job, Abatement Technologies filtration containing what we dislodge, and duct repair handled by the same technicians who clean. Call (833) 467-7154. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Why Longmont Residents Choose Us for Lennox Service
Lennox equipment has its own habits. The ducted air handlers, the cased coils, the way a Merit or Elite furnace sits on its plenum and pulls return air – none of that is a mystery to technicians who work on it consistently. Our technicians have up to 12 years of experience, and the Lennox calls are a steady part of that work.
What we won’t do is pretend to be something we’re not. We’re an independent Lennox service provider. No factory authorization, no warranty endorsement, no dealer badge. What you get instead is straight diagnosis: if your return ducts are leaking grit into a Longmont home, we’ll show you where and fix it. If a coil is fouled past cleaning, we’ll tell you that too, and recommend repair with parts that fit rather than a replacement you don’t need.
Scheduling is simple. We answer 24/7, dispatch from 7am to 7pm Sunday through Friday, and closed Saturday. For a Longmont homeowner, that means a conversation and a written estimate, not a runaround.
Styles & brands we work with
- Whole-home duct cleaning
- Dryer vent cleaning
- Camera inspection
- Sanitizing & deodorizing
Common Lennox Air Duct Cleaning Problems We Solve in Longmont
- Grit infiltrating leaky return joints on Merit and Elite systems. Longmont’s downslope winds drive fine topsoil into every seam, and on these systems the dust coats the blower wheel and evaporator coil fins as a light airborne film that cuts airflow long before it ever cakes. We find the joint, seal it, and clean the wheel and coil back to bare metal.
- Undersized original trunks and flex retrofits on older Lennox furnaces in mid-century ranches. Around old town Longmont, plenty of ranches still run their original sheet-metal trunk with a later flex splice at the plenum. Those splices collect debris and pull dust out of unconditioned chases. We open them, clean them and re-seal with mastic or foil tape.
- Debris settling in long flex runs on variable-speed air handlers. In newer two-story Longmont homes the flex runs pass through unconditioned chases, and at low fan speeds the light debris drops into the corrugations instead of reaching the filter. Rotobrush agitation plus truck-mounted vacuum gets it out.
- Dry, brittle coil-cabinet gaskets letting dust bypass the filter. High-altitude dry air hardens foam gaskets and tape seals on cased coils over time. Once that seal fails, return-side dust lands straight on the coil face. We replace gaskets that fit and reseal the cabinet.
- Blower wheels matted with light dust after spring wind events. It’s airborne, not caked, which means a rotary brush and HEPA capture handle it cleanly – and it also means it comes back fast if the return leaks aren’t sealed.
Lennox Service in Longmont: What Local Conditions Mean for Your Equipment
Here’s the local pattern worth knowing. Longmont sits on the Front Range wind corridor east of the foothills, and foothills-driven downslope wind events leave a visible fine grit film on the return grilles in west-facing rooms of 80503 homes. That pattern rarely shows up on the sheltered side of town. For Lennox owners, it changes what a duct cleaning actually has to accomplish. On the exposed west side, the job is mostly about wind-driven infiltration: finding the return-side gaps that let grit in, sealing them, then cleaning what already made it to the blower and coil. The city’s housing mix reinforces this. The 1950s-70s ranches near old town carry undersized sheet-metal trunks and flex retrofits that trap debris, while the newer builds east toward 80504 run long flex through unconditioned chases. That dust-plus-dry-air combination is more pronounced than in sheltered Boulder or wetter Denver. Which is why we clean return ducts and seal them in the same visit, rather than just running a brush through the supply side and calling it done.
Lennox Models & Products We Service in Longmont
We work on the Lennox ducted equipment that shows up in Longmont homes: Merit Series gas furnaces, Elite Series furnaces and air handlers, Signature Collection systems with variable-speed air handlers, and the cased upflow and downflow evaporator coils that pair with Merit and Elite equipment. We also service the filtration and air-quality components around them, including Honeywell and Aprilaire units, and we work carefully around those existing investments rather than yanking them out.
On parts, we use OEM Lennox gaskets, filter racks and door seals where fit genuinely matters, and quality aftermarket mastic, foil tape and flex duct for sealing and repair work. Fitting parts that match your equipment is the difference between a seal that holds through a Longmont spring and one that fails by June.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Longmont
Pricing is per job, set by a written estimate you approve before any work begins. We don’t quote per-vent prices or teaser coupons, and there’s no separate charge to come out and look. What drives the number:
| Service | Typical range |
|---|---|
| Whole-home air duct cleaning | $350 – $700 |
| Return duct cleaning and sealing | $200 – $450 |
| Evaporator coil cleaning | $175 – $400 |
| Duct repair (disconnected, crushed or leaking runs) | $250 – $900, quoted after inspection |
| Dryer vent cleaning | $125 – $250 |
Those ranges are estimates for planning, not a quote. The written estimate sets the final price, and the free estimate includes an inspection of your return joints, blower and coil so you know exactly what’s being priced. Call (833) 467-7154 for yours.
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 – Lennox Air Duct Cleaning in Longmont
Because the downslope winds off the foothills push fine prairie dust straight into return-side leaks, and west-facing rooms in Longmont catch the worst of it. The grille is just where you see it; the gap is usually at a return joint or a coil cabinet seal. Sealing those gaps is what stops the film from coming back. Call (833) 467-7154 – estimates are free.
Yes, and it’s a common one. At low fan speeds a variable-speed air handler doesn’t have the static pressure to push light debris out of long flex corrugations, so it settles and gradually restricts flow. Cleaning with rotary agitation and truck-mounted vacuum, then resealing the access points, restores it. Call (833) 467-7154 to book an inspection.
They need the cabinet seals checked, at minimum. Dry high-altitude air hardens the foam gaskets and tape at the coil cabinet, and once that seal opens, return dust bypasses the filter and fouls the coil face. We replace the gaskets with parts that fit and clean the coil. Call (833) 467-7154 for an estimate.
Spring and fall usually make the most sense here, because the low humidity keeps debris light and airborne rather than caked – so a cleaning catches more loose material before it settles. Homes on the exposed west side of town often benefit most from the spring visit. Call (833) 467-7154 and we’ll talk through your system.
Yes. Most of the grit that ends up on Longmont return grilles enters through the return side, so sealing those joints with mastic or foil tape cuts the source rather than chasing the symptom. We seal and clean in the same visit. Call (833) 467-7154 – the estimate is free.
Service Areas Near Longmont
We take Lennox duct work across the surrounding communities, including Longmont itself, Firestone, Fort Lupton, Fort Collins, Lochbuie and Greeley. We also serve nearby Niwot and Erie, both close enough that the same wind corridor and housing mix shape the work.
Book Your Lennox Service in Longmont Today
If your Lennox system is pulling grit through the returns, or a variable-speed air handler just isn’t moving the air it used to, we can take a look. We’re an independent Lennox service provider, our technicians have up to 12 years of experience, and every job gets a free written estimate before work starts. Call (833) 467-7154. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday. For an overview of the brand work we handle, see our Lennox service page, and for city-wide coverage, visit Longmont.
Written by the team at Duct Cleaning Greeley.