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.
Fast, Reliable Chimney Cleaning & Sweep Across Cambridge
A professional chimney sweep in Cambridge, MA typically costs between $189 and $349 for a standard cleaning with Level 1 inspection, while Level 2 camera inspections run $289 to $479 due to the city’s complex multi-flue chimney stock. Most Cambridge appointments are scheduled within a week during peak season, with our dispatch coordinated from our Boston office and crews serving Cambridge neighborhoods directly. Call (857) 392-4709 to book a free estimate.
We’ve been working on Cambridge chimneys for over 42 years, and we’ve learned that no two are quite alike. The city’s dense fabric of triple-deckers, brick rowhouses, and converted Victorians means a “standard” sweep rarely exists here. Our Chimney Cleaning & Sweep team treats every Cambridge job as its own puzzle, starting with what we find rather than what we assume.
Why Hearthstone Chimney Co. Is Cambridge’s Preferred Chimney Cleaning & Sweep Company
Cambridge homeowners know the difference between a sweep who checks the box and one who checks the flue. We’ve built our reputation in this city one triple-decker at a time, and our reviews from Cambridge customers consistently mention the same things: we show up when we say, we explain what we found in plain English, and we document it with photos they can actually see.
Our response time to Cambridge is typically same-week during the shoulder seasons, though we always recommend booking before October when demand spikes. We know the parking realities around Harvard Square, the narrow street access in Cambridgeport, and the roof-line challenges of East Cambridge’s older blocks. That local knowledge means we arrive with the right equipment and the right expectations, not a suburban playbook that doesn’t fit.
Our technicians are background-checked, uniformed, and complete most jobs in a single visit. No-hassle upfront pricing means the number on your estimate is the number on your invoice. And every job is backed by our 90-Day Done Right Promise in writing, no arguing.
Our Chimney Cleaning & Sweep Services in Cambridge
Level 1 Inspection
A Level 1 inspection covers readily accessible portions of your chimney and appliance connection. In Cambridge, this is appropriate for annual maintenance on systems that haven’t changed and where you know the flue configuration. We’ll check for obstructions, creosote buildup, and basic structural soundness. But given what we routinely find in Cambridge’s multi-flue housing stock, we often recommend upgrading to Level 2 on the first visit.

Level 2 Inspection
This is where Cambridge’s housing stock demands more than the standard approach. A Level 2 camera inspection uses a high-resolution video system to examine the entire flue interior, including areas not visible from the top or bottom. In Cambridge’s triple-deckers and attached rowhouses, this is essential. We were called to a triple-decker on Hamilton Street in Cambridgeport where the first-floor tenant complained of a draft and soot dust. When we opened the cleanout, we found three flues in one chase: one clay tile, one flexible stainless, and one bare brick. A Level 2 camera inspection revealed the bare brick flue was venting the second-floor furnace, and creosote had built up to third-degree glaze. We swept the accessible flues, applied HeatShield to the cracked clay liner, and recommended a full reline of the bare brick flue to prevent cross-contamination. Without that camera inspection, we would have missed the hazard entirely.

Creosote Removal
Cambridge’s long heating season, running from October well into April, gives creosote plenty of time to accumulate. Third-degree glazed creosote, the hardened tar-like deposit that requires mechanical removal, is common in Cambridge’s older systems where appliances were downsized without proper flue resizing. We remove it with professional-grade rotary systems, not wire brushes that scatter dust through a shared building. In rental properties, where tenants may not know the last sweep date, this buildup can be severe. We document everything with photos.

Soot Removal & Fireplace Cleaning
A fireplace in a Cambridge living room is often the building’s original heat source, converted to decorative gas or still burning wood. We clean fireboxes, smoke chambers, and dampers, removing the acidic soot that degrades mortar over time. In Cambridge’s humid summers, that soot absorbs moisture and accelerates deterioration of the firebrick. A thorough fireplace cleaning extends the life of the masonry and improves draft performance when you need it.

Annual Sweep
For Cambridge homeowners who use their fireplaces or heating appliances regularly, an annual sweep is the baseline. We schedule these to avoid the October rush, and we send reminder calls because we know how easily a year passes. Our annual service includes a basic inspection, sweep, and condition report with photos.

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.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Cambridge
We work exclusively with professional-grade materials from DuraFlex, HeatShield, Gelco, and other industry-trusted manufacturers. No builder-grade substitutes. For Cambridge customers, this means we stock the right liner diameters, crown repair compounds, and cap sizes to match the city’s older chimney dimensions without ordering delays. When we find a cracked clay liner in a Cambridgeport triple-decker, we can often apply HeatShield cerfractory sealant the same visit rather than scheduling a return. That parts availability matters in a city where heating season waits for no one.
Common Chimney Cleaning & Sweep Problems We See in Cambridge Homes
- Assuming a single-flue chimney without inspection. In Cambridge’s multi-unit buildings, a single masonry chase often contains three or four flues serving separate apartments. A standard sweep of the “fireplace flue” can miss that a neighbor’s furnace is venting into the same stack, creating cross-contamination risks that a Level 2 camera inspection would catch immediately.
- Ignoring abandoned or unlined flues. When a Cambridge building converted from coal to oil to gas, flues were sometimes abandoned in place rather than properly sealed. These open passages can leak creosote, soot, or carbon monoxide into adjacent units, especially in tightly constructed triple-deckers where air pressure differentials move fumes between floors.
- Overlooking freeze-thaw damage between cleanings. Cambridge’s 30-40 annual freeze-thaw cycles destroy exposed lime-mortar joints and brick crowns. Spalling brick and open joints allow water infiltration that accelerates liner damage, but the problem is often invisible from the firebox until a camera inspection reveals the saturated masonry above the roofline.
- Sweeping without verifying flue configuration against actual venting. In East Cambridge and North Cambridge, we’ve found furnaces venting into flues labeled “abandoned” on old permits, and fireplaces sharing a flue with a water heater. The permit history rarely matches reality in these century-old buildings.
Pricing for Chimney Cleaning & Sweep in Cambridge, MA
Cambridge’s chimney market runs higher than suburban areas due to access challenges, multi-flue complexity, and the prevalence of Level 2 inspections. Here’s what we typically see:
| Service | Cambridge Price Range |
|---|---|
| Standard sweep with Level 1 inspection | $189 - $289 |
| Level 2 camera inspection (per flue) | $289 - $479 |
| Creosote removal (light to moderate) | $149 - $249 add-on |
| Third-degree glazed creosote removal | $349 - $549 |
| Fireplace cleaning & firebox restoration | $229 - $389 |
| Multi-flue inspection package (2+ flues) | $479 - $749 |
Factors that affect your specific price: number of flues in the chase, accessibility of the cleanout (some Cambridge basements require navigating century-old obstacles), severity of creosote buildup, and whether we find damage requiring documentation for a landlord or insurance. We provide no-hassle upfront pricing before any work begins. Estimates are free. Call (857) 392-4709 for an exact quote.
We Also Serve Cities Near Cambridge
Our crews work throughout the metro area, and we regularly schedule Chimney Cleaning & Sweep in Cambridge alongside appointments in Somerville, Belmont, Medford, and Brookline. The same technicians, the same standards, the same written guarantee. If you’re in one of these neighboring communities, the same call gets you on the schedule.
Serving Cambridge, MA - Our Local Coverage Area
We’re based in the Cambridge 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 Cambridge
A standard sweep assumes one flue, one appliance, and a clear venting path. Cambridge’s triple-deckers routinely contain three or four mismatched flues in a single chase, each relined or modified in a different decade. Without a Level 2 camera inspection per flue, you cannot confirm what is actually venting where, and cross-contamination between units is a real hazard we’ve documented repeatedly. We recommend Level 2 for every first visit to a Cambridge multi-unit building. Call (857) 392-4709 to schedule.
The National Fire Protection Association recommends annual inspection, with sweeping as needed based on creosote accumulation. In Cambridge, where heating systems run hard through long winters and many chimneys serve multiple tenants, we find annual sweeping is the practical minimum for active wood-burning fireplaces, while gas and oil systems need inspection at least every two years to catch deteriorating liners. Call (857) 392-4709 for an exact quote - estimates are free.
Third-degree creosote is a hardened, tar-like deposit that forms when wood smoke condenses in a cool or improperly sized flue. It cannot be removed with standard brushing and requires mechanical rotary removal. In Cambridge, it’s common in older chimneys where modern appliances were installed without resizing the flue, creating the cool, slow draft that produces glazed buildup. It’s highly combustible and the leading cause of chimney fires. Call (857) 392-4709 for an exact quote - estimates are free.
Yes. In Cambridge’s shared masonry chimneys, a neighbor’s improperly vented or unlined furnace can introduce carbon monoxide, soot, or exhaust odors into your unit through cracked mortar, abandoned flues, or shared smoke chambers. We’ve found cases where a first-floor tenant’s “draft problem” was actually a second-floor furnace venting into an open flue. Only a Level 2 camera inspection per flue can map these connections and identify the source. Call (857) 392-4709 for an exact quote - estimates are free.
Spalling, where the brick face flakes off due to freeze-thaw damage, indicates water infiltration that accelerates liner deterioration and mortar decay. In Cambridge, our 30-40 annual freeze-thaw cycles make this common on exposed chimney crowns and above-roof masonry. A sweep alone won’t stop the underlying damage, but a proper inspection during cleaning will document the condition with photos so you know whether the chimney is safe to use while you plan repairs. We never recommend work you can’t see for yourself. Call (857) 392-4709 for an exact quote - estimates are free.
Ready to schedule? Call Hearthstone Chimney Co. at (857) 392-4709. A live person answers 24 hours a day, 7 days a week. We’ll book your free estimate, explain what to expect, and send a background-checked, uniformed technician who knows Cambridge’s chimneys. Done right - and we stand behind it.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Cambridge and local communities since 1984.





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