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.
Gelco Chimney Cleaning & Sweep in Boston: What to Know First
Gelco chimney cleaning and sweep in Boston typically runs $189 to $349 for a standard Level 1 cleaning, while a Level 2 camera inspection with cleaning falls between $349 and $529 depending on flue height and creosote class. Most Gelco installations in Boston get booked and completed within 5 to 10 business days. We give you a written price before any work starts, so you’ll never get a phone-call estimate or a surprise on the invoice.
This page is for Boston homeowners with Gelco chimney components who want the actual cost, the real process, and the weak points specific to Gelco products before they book. If you’d rather skip the rest: call (857) 567-8887 and we’ll schedule a free estimate with a documented photo record on every visit, per Clause 4 of the Haven Standard.
How Gelco Products Fail - and How We Fix Them
- Gelco flashing collars on triple-decker rooflines. Boston’s freeze-thaw cycle works the corners of Gelco’s galvanized flashing collars against the shingles on Dorchester and Southie’s older triple-deckers. What starts as a hairline gap lets water track down the exterior of the flue, staining the chase top and accelerating rust. We strip the old collar, inspect the deck penetration, and reseal with a heavier-gauge replacement before reinstalling. On a level-headed day this takes about ninety minutes from ladder to cleanup.
- Cast-in-place Gelco crown caps with spalling edges. Gelco’s cast crown caps hold up well against New England winters, but the outer lip takes a beating from ice dams and blown debris. Spalling along the edge exposes the aggregate underneath, which lets water into the flue wall over time. We assess the crown with a camera from the roofline, map the spalled area, and patch or recast the lip before it reaches the liner collar. A recast crown runs $385 to $675 depending on the footprint.
- Gelco multi-flue caps with clogged mesh on woodstove runs. Gelco’s multi-flue cap mesh is finer than most aftermarket mesh, which catches creosote faster on wood-burning flues in Jamaica Plain and Roslindale. The symptom is a lazy draft and a smoke-smelling living room, and the cause is almost always a clogged cap, not a liner failure. We pull the cap, run a camera down the flue to confirm the creosote class, then clean the mesh and the flue in one pass. You walk away with photos showing exactly what was blocked and what it looks like after.
- Galvanized Gelco rain pans under wood-burning stoves. The rain pan under a Gelco stove pipe in Boston’s older condo buildings tends to collect creosote dust and condensation, especially in units with exterior wall chases. The tell is a rust stain bleeding down the interior wall near the stove. We remove the pan, inspect the thimble and surrounding brick with the camera, and replace the pan with a stainless version when needed. Most jobs are done in under two hours.
- Gelco damper plates on fireplace inserts. Gelco damper plates on their insert models have a tendency to warp after 10 to 12 Boston heating seasons, particularly in homes near the harbor where salt air accelerates corrosion. A warped plate won’t seat fully, which means conditioned air leaks up the flue all summer. We measure the plate opening, order the correct OEM replacement to avoid over-travel or undersewing, and install it with a written warranty. If it’s a repairable warp, we’ll say so plainly instead of selling you a new part.
Our Gelco Chimney Cleaning & Sweep Process

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Call or text (857) 567-8887. A live person answers, 24/7. We ask about your Gelco setup, the last time it was cleaned, and any symptoms you’ve noticed. We book a time window that works for you.
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On-site walkthrough and written scope. Our tech arrives in uniform, background-checked, and named on your appointment. We look at the whole system: flue, cap, crown, flashing, damper, hearth. Then we hand you a written scope and a firm price before touching anything. That’s Clause 1 of the Haven Standard: write it in writing before work starts.
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Camera-scan inspection (NFPA 211 Level 2). We run a camera down the flue and record the whole run. You see what we see: creosote class, liner condition, blockages, cracks, whatever is there. The camera doesn’t guess. Neither do we.
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Cleaning and debris removal. We sweep the flue, remove creosote and soot, clean the smoke chamber, and clear the Gelco cap mesh and rain pan. We run the camera again after cleaning to document the difference.
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Written documentation and warranty. You get the post-clean photos, the camera footage, the written scope, and the written warranty on any parts we replaced. We keep a copy in our archive, too, under Clause 4.
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365-day check-in. The Done Right Promise covers every job we do. If anything isn’t right, we make it right within a year. No fine print, no arguing.
Before
AfterWhat Gelco Chimney Cleaning & Sweep Costs in Boston
Our pricing is flat and written in the scope before we start. No phone estimates, no surprises.
- Standard Gelco chimney cleaning with Level 1 inspection: $189 to $349
- Level 2 camera inspection with full cleaning and written photo report: $349 to $529
- Gelco cap mesh cleaning or replacement: $85 to $225
- Gelco crown patch or recast: $385 to $675
- Gelco flashing collar reseal: $145 to $310
- Gelco rain pan replacement: $185 to $420
- Gelco damper plate replacement: $240 to $495
What moves the price: flue height, access difficulty (steep Boston rooflines on triple-deckers add ladder time), creosote class (Class III glazed creosote takes longer and costs more), and whether we’re doing a straight sweep or a sweep plus parts replacement. Every quote includes the written scope, the written warranty, and the documented photo record. If you have a written quote from another company, bring it in. We’ll give you a free second opinion on it.
Why Boston Homeowners Call Level Two Chimney Boston for Gelco Work

Since 2009, our crews have inspected and cleaned more than 38,000 chimneys across Greater Boston, including plenty of older triple-deckers along Dorchester Avenue with Gelco components. Corrine Halstead built the crew’s reputation on one habit: a written price before any work starts, on every job, no exceptions. If we find a liner that needs replacement or a chimney that’s structurally fine, we show you the camera footage and tell you what it means in plain terms before you spend another dollar.
We work on Gelco products as an independent Gelco service provider, and we also carry parts and materials from DuraFlex and HeatShield for liners and repair work. That means when we write a scope, we’re not tied to one manufacturer’s pricing. We choose the right part for the chimney, not the one with the best margin. Every tech is background-checked, uniformed, and named on the appointment. You’ll get a text when they’re on the way.
And every job is backed by the 365-Day Done Right Promise: if it’s not done right, we make it right. That’s stamped on every job under the Haven Standard.
FAQs
Once a year if you burn wood regularly, and at least once every two years for gas fireplaces. Boston’s humid coastal air mixes with creosote deposits to form acidic residues that corrode liners and Gelco metal components faster than drier climates. Skip a year and you’ll likely see a Class II creosote buildup when we finally run the camera. Call (857) 567-8887 to schedule your annual sweep with a written photo report.
No. Gelco warranties cover defects in materials and workmanship, not routine maintenance. What voids a warranty is neglect: letting creosote build to Class III, running a chimney with a cracked crown that lets water in, or using aftermarket parts that don’t match the original spec. We document every job with photos and a written report, so if a warranty claim ever comes up, you have the record to show the manufacturer. We use OEM parts where it matters and quality aftermarket parts where they outperform the original.
Most Gelco cleaning and inspection jobs in Boston get booked within 5 to 10 business days. If you’ve got a burning-season deadline or a real estate closing, tell us when you call and we’ll work the schedule. We answer the phone 24/7, so you’ll talk to a live person, not a voicemail.
For a Gelco installation in a Boston home that’s more than 10 years old, we recommend a Level 2 camera inspection at least once. The camera sees what a flashlight can’t: hairline cracks in the flue liner, hidden creosote deposits in the smoke chamber, or the first signs of water penetration at the crown. We’ve found failed liners in homes that looked perfectly fine from the hearth and the roofline. If the camera shows a clean flue, you’ll have the photos to prove it. If it shows trouble, you’ll know before it becomes a chimney fire or carbon monoxide problem.
Creosote builds from Class I to Class III, and Class III is glazed, hardened, and flammable. A chimney fire is hot enough to crack liners and send sparks through the roof. Even without a fire, a clogged Gelco cap mesh or a blocked flue means carbon monoxide backs up into the house instead of venting outside. The risk is real, but it’s also preventable: a $189 to $349 sweep once a year is a lot cheaper than a $3,000 liner replacement or a fire restoration. Call (857) 567-8887 and we’ll get you a written quote before anything gets cleaned.
Written by Corrine Halstead, Owner, Level Two Chimney Boston at Level Two Chimney Boston, serving Boston and nearby areas.





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