Level 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Before
After
Before
After
Before
AfterFast, Reliable Chimney Cleaning & Sweep Across Longmont
Chimney cleaning and sweep in Longmont typically runs $189-$329 for a standard annual service, with Level 2 camera inspections starting at $279. Most Longmont appointments are scheduled within 3-5 business days, and every visit includes a documented photo record under Haven Standard Clause 4. Call us at (970) 598-0453 for a written quote before any work begins.
We’ve been sending crews to Longmont since 2009, and our dispatch office in Denver coordinates same-week appointments throughout the city. We know the difference between a ranch home off Ken Pratt Boulevard and a Victorian on Coffman Street, and we know what each demands. Our Chimney Cleaning & Sweep team carries the equipment for both modern prefab fireplaces and century-old brick flues. Longmont’s elevation, wind exposure, and housing variety mean a generic sweep checklist won’t catch what actually fails here.
Why Emberly Chimney Cleaners Boulder Is Longmont’s Preferred Chimney Cleaning & Sweep Company
We’ve completed more than 38,000 chimney inspections and cleanings since 2009, and a significant share of those have been in Boulder County. Longmont homeowners return because we name what we found, show the photo evidence, and deliver a written price before any work starts. No verbal estimates that change when the tech arrives. No flashlight inspections billed as documentation.
Our reviews from Longmont customers consistently mention two things: the camera footage they received and the written scope they signed beforehand. One recent Old Town homeowner noted that our tech identified an unlined flue their previous sweep had missed for three years. Another on the east side appreciated that we texted when the technician was en route, arrived in a marked van, and left a stamped warranty card.
Response time to Longmont averages 3-5 days for standard sweeps, with emergency calls for suspected blockages or wind damage prioritized. Our crews are background-checked, uniformed, and carry license information on every page of their documentation. Scheduling is coordinated from our Denver office, but the technicians serving Longmont live in the northern metro and know the local conditions.
Our Chimney Cleaning & Sweep Services in Longmont
Level 1 Inspection
A Level 1 inspection is the baseline annual check for chimneys with no changes in appliance or fuel type. In Longmont, we perform these on newer homes in subdivisions like Somerset Meadows and on well-maintained systems in established neighborhoods. The technician examines readily accessible portions of the chimney exterior, interior, and connecting appliance, checking for obstructions, combustible deposits, and basic structural soundness. We document findings with photos and provide a written condition report. For most Longmont homeowners burning wood occasionally through Boulder County’s restricted burn days, this annual check satisfies insurance and warranty requirements.
Level 2 Inspection
Level 2 is our default for every new customer in Longmont, and it’s what most homeowners here actually need. This is the NFPA 211 standard that requires a camera scan of the entire flue interior, accessible portions of the attic and crawl space, and a written report with photo documentation. In Longmont, Level 2 catches what Level 1 misses: Chinook wind damage to caps and crowns, freeze-thaw spalling in mortar joints, and the unlined brick flues common in Old Town homes built before clay tile became standard. Clause 4 of the Haven Standard requires this photo record on every job, and we’ve operated that way since 2009. The camera doesn’t lie about creosote buildup, liner gaps, or moisture staining. You’ll see what we see, and you’ll get a written price for any recommended work before we proceed.
Creosote Removal
Longmont’s wood-burning curtailment days compress fireplace use into fewer, longer burns. Homeowners tend to load more fuel and burn hotter when they finally get a permitted day, which accelerates stage-2 and stage-3 creosote formation. Stage 1 creosote is flaky and brushes off easily. Stage 2 is tar-like and requires rotary chain tools. Stage 3 is glazed, nearly impossible to remove with standard brushes, and highly combustible. We’ve removed heavy stage-3 deposits from chimneys in Longmont’s 1960s ranch neighborhoods where homeowners burned every permitted evening through January without realizing the hazard. Our crews carry rotary chains, chemical modifiers, and the patience to do the job completely. We classify what we find and show you the before-and-after footage.
Soot Removal
Soot accumulation is less hazardous than creosote but still restricts draft and indicates incomplete combustion. In Longmont’s older homes with original oil-to-gas conversions, we find soot-caked smoke chambers and connector pipes that reduce efficiency and increase carbon monoxide risk. Our soot removal service includes HEPA-containment vacuuming, brush cleaning of the firebox and smoke chamber, and a draft test to confirm proper airflow. For homes near the St. Vrain corridor that experienced moisture intrusion after the 2013 flood, soot mixed with moisture creates acidic compounds that deteriorate metal components faster. We flag these conditions for repair, not just cleaning.
Annual Sweep
The annual sweep is preventive maintenance, not a reaction to a problem. In Longmont, we recommend scheduling before burn season begins in October, after the summer thunderstorm and hail season has passed and before the first curtailment day is called. Our annual sweep includes a Level 1 or Level 2 inspection (your choice, though we recommend Level 2 for first-time customers), creosote and soot removal, cap and crown assessment, and a documented photo record. We also check for animal nesting, common after Longmont’s windy spring season when displaced caps leave flues exposed. The 365-Day Done Right Promise applies: if anything we swept needs re-addressing within a year, we make it right.
Fireplace Cleaning
Fireplace cleaning addresses the visible and accessible components: firebox walls, damper assembly, smoke shelf, and hearth extension. In Longmont’s split-level homes from the 1970s and 1980s, we often find cracked refractory panels and damaged throat dampers that affect draft even when the flue itself is clean. Our fireplace cleaning includes panel inspection, damper operation testing, and recommendations for replacement parts sourced through our Haven buying network from DuraFlex and HeatShield. We don’t guess at panel compatibility; we measure and order correctly the first time.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in Longmont
We source materials through Haven’s buying network to keep customer prices honest, and we stock common repair components for fast turnaround on Longmont jobs. Our inventory includes DuraFlex stainless steel liner systems for relining unlined or damaged flues, HeatShield cerfractory sealant for resurfacing deteriorating smoke chambers, and Gelco stainless steel caps and chase covers sized for standard and custom applications. For crown repairs, we use Olympia Chimney products formulated for Colorado’s freeze-thaw exposure. We don’t markup parts 300% and hope you won’t check. Our written quotes itemize materials and labor separately, and we source only what the job requires.
Common Chimney Cleaning & Sweep Problems We See in Longmont Homes
- Chinook wind damage to caps and crowns. Longmont’s position at the mouth of the St. Vrain Canyon gap funnels extreme downslope winds directly onto residential chimneys. We replace caps blown into yards on Quail Road and repair crowns cracked by wind-driven debris impact. Every sweep here includes cap torque verification and crown seal inspection.
- Freeze-thaw spalling in brick and mortar. At 5,000 feet, Longmont experiences more aggressive freeze-thaw cycling than Denver. Water enters hairline cracks, expands overnight, and spalls brick faces open by morning. We document spalling severity with camera footage and recommend crown repair or waterproofing before the next cycle worsens it.
- Unlined brick flues in Old Town homes. Pre-1930s homes near Main Street and Coffman Park often have original brick flues with no clay tile liner, legal when built but failing current NFPA 211 standards. Many have 1970s wood inserts installed by previous owners, creating a hidden fire hazard from third-degree creosote that standard brushing cannot safely address. We identify these with camera inspection and recommend appropriate relining.
- Moisture damage from the 2013 St. Vrain flood. Homes near the creek corridor, particularly in the historic core and along Third Avenue, may have unremediated moisture intrusion at chimney bases. We inspect for efflorescence, rusted cleanout doors, and deteriorated foundation flashing that indicates ongoing water entry.
Pricing for Chimney Cleaning & Sweep in Longmont, CO
| Service | Typical Range in Longmont |
|---|---|
| Annual Sweep with Level 1 Inspection | $189-$249 |
| Annual Sweep with Level 2 Camera Inspection | $279-$329 |
| Heavy Creosote Removal (Stage 2-3) | $349-$489 |
| Fireplace Cleaning Only | $149-$199 |
| Cap Replacement (standard stainless) | $289-$429 installed |
| Crown Repair/Reseal | $389-$649 |
What moves a Longmont job toward the higher end: unlined flues requiring specialized equipment, heavy stage-3 creosote needing rotary chain removal, wind-damaged caps requiring custom sizing, or access constraints on steep roofs common in the Prospect New Town area. What keeps it at the lower end: straightforward annual maintenance on standard systems with clear access. We deliver a written price before any work starts, every time, with no exceptions. Free estimates are available at your Longmont home, and we offer a Free Second Opinion on any competitor’s written quote. Call (970) 598-0453 to schedule.
We Also Serve Cities Near Longmont
Our crews regularly work in Longmont and the surrounding communities: Niwot to the south, Erie to the southeast, Frederick to the east, and Boulder to the southwest. Scheduling is coordinated from our Denver office, with local technicians assigned based on daily route efficiency. Whether you’re in a Niwot farmhouse or a Boulder condo, the same Haven Standard applies: written price first, photo record on completion, 365-Day Done Right Promise.
Serving Longmont, CO - Our Local Coverage Area
We’re based in the Longmont area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Chimney Cleaning & Sweep in Longmont
Once per year, minimum, if you burn wood or use a solid-fuel appliance. In Longmont, we also recommend an additional inspection after any severe wind event that might have displaced your cap or cracked your crown. The NFPA 211 standard is clear: annual inspection, cleaning as needed. For homes with unlined flues or heavy use during Boulder County’s limited burn days, we sometimes recommend mid-season checks. Call (970) 598-0453 to discuss your burn pattern and get a written maintenance schedule.
Look for a missing or tilted cap, debris in the firebox, soot stains on the ceiling near the chimney, or a draft that reverses into the room on windy days. Longmont’s Chinook winds are distinctive: they hit suddenly, often overnight, and the damage shows up as moisture intrusion or animal entry days later. If you hear rattling from the chimney during wind events, the cap hardware is likely loosening. We inspect for wind damage as standard on every Longmont sweep, not as an upsell. Call (970) 598-0453 for a camera inspection if you suspect damage.
Boulder County’s wood-burning curtailment days compress fireplace use into fewer permitted burns. Longmont homeowners tend to burn longer and hotter in single sessions to maximize their limited opportunities, which produces more stage-2 and stage-3 creosote than the same total hours spread across a season. Combined with older, often unlined flues that run cooler and condense more creosote, the fire risk here is higher than in cities with unrestricted burn schedules. We classify creosote stage on every sweep and show you the footage. Call (970) 598-0453 for an inspection before burn season intensifies.
Yes, but with important caveats. We can remove soot and stage-1 creosote from an unlined brick flue, and we do so regularly on homes near Coffman Park and along Main Street. However, stage-2 or stage-3 creosote in an unlined flue is a significant fire hazard that brushing alone cannot safely resolve. In these cases, we recommend a DuraFlex stainless steel liner installation, which we can quote in writing and install with proper permitting. We never clean an unlined flue and declare it safe without camera verification of complete deposit removal. Call (970) 598-0453 for a Level 2 inspection to assess your specific flue condition.
Check three things specific to Longmont conditions: cap security after summer wind events, crown integrity after freeze-thaw cycling, and damper operation after months of disuse. Look for water stains in the firebox, which indicate crown or flashing failure common after our aggressive spring hail season. Smell for animal nesting, particularly if your cap was loose during summer. If anything seems off, schedule a Level 2 inspection rather than lighting a test fire. The camera will reveal what visual checks cannot. Call (970) 598-0453 for a pre-season sweep and inspection.
On a windy March morning in Longmont’s Old Town district, our tech responded to a call about a drafty fireplace and soot staining on the ceiling. Inspection revealed a cracked chimney crown from repeated freeze-thaw cycles and a displaced cap that had been torn off during a recent Chinook wind event, allowing moisture and debris deep into the unlined flue. We reset the cap, repaired the crown, and performed a full sweep that removed first-degree creosote from the smoke chamber, restoring proper draft before the homeowner’s next fire.
Written by Corrine Halstead, Owner at Emberly Chimney Cleaners, serving Longmont and the northern Front Range since 2009.