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.
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AfterFast, Reliable Fireplace Services Across Cambridge
Fireplace service in Cambridge typically runs $180-$450 depending on the repair, and most jobs are completed in a single visit with upfront pricing agreed before we start. Our crews are dispatched from our Boston office and serve Cambridge daily, from Harvard Square to East Cambridge to the triple-deckers of North Cambridge. We’ve worked on the chimneys of this city for over 42 years, and we know the difference between a Federal-style rowhouse flue and a Cambridgeport three-decker chase that holds three. Call (857) 392-4709 - a live person answers, 24 hours a day.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Why Hearthstone Chimney Co. Is Cambridge’s Preferred Fireplace Services Company
We’ve earned our reputation in Cambridge one brick at a time. Homeowners in neighborhoods like Cambridgeport and East Cambridge know our technicians by the uniform and the photo report we leave behind - every Level 2 camera inspection ends with images you can see and a plain-English verdict, documented like an engineer, explained like a craftsman.
Our reviews from Cambridge customers consistently mention the same things: we show up when we say we will, we explain what we found before we recommend anything, and we back every job with the 90-Day Done Right Promise in writing. No arguing. If it’s not right, we come back.
Dispatch and scheduling are coordinated from our Boston office, but our crews live in and around Cambridge. That means we understand the parking constraints on narrow streets like Putnam Avenue, the access issues in triple-decker basements, and the specific failure patterns that Cambridge’s pre-1920 housing stock produces. We’re not learning your city on your dime.
Our Fireplace Services team is background-checked, uniformed, and trained to complete most jobs in a single visit. No-hassle upfront pricing means the number on the estimate is the number on the invoice. A square deal: no surprises on the bill.
Our Fireplace Services in Cambridge
Gas Fireplace Service
Gas fireplaces in Cambridge’s older housing stock often vent into chimneys that were built for coal or oil, then converted piecemeal over decades. The burner orifices clog with dust, the pilot assemblies fail from moisture infiltration, and the venting configuration may no longer match the appliance rating. We service all major brands and verify venting with a Level 2 camera inspection before declaring any system safe to operate. In Cambridge’s rental-heavy market, we also document code compliance for landlords and property managers.
Wood Burning Fireplace
Cambridge’s wood-burning fireplaces are often the original fixtures in 1880s Victorian wood-frames or the later additions to triple-decker units. Many vent through bare brick flues that have never been relined, or through clay tile that cracked during the city’s relentless freeze-thaw cycles. We do not brush and leave. We camera-inspect, show you the creosote buildup or mortar deterioration, and clean only after we know what the flue can handle. Third-degree creosote - a hardened, tar-like glaze common in Cambridge’s older chimneys - cannot be brushed out with standard tools and requires chemical treatment or rotary removal.
Fireplace Insert
Fireplace inserts are popular in Cambridge’s pre-1920 row houses and triple-deckers because they promise efficiency without a full rebuild. But inserts installed into unlined or deteriorating flues are a leading cause of chimney fires and carbon monoxide infiltration in this city. We remove the insert, camera-inspect the full flue run, and install a proper stainless liner - we use DuraFlex and Olympia Chimney products - before reinstalling or replacing the unit. No insert goes back into a chase we have not fully documented. This is where the industry’s worst upselling happens, so we are explicit: nothing is recommended without camera evidence you can see for yourself.
Damper Repair
Seized or rusted dampers are routine in Cambridge chimneys that have sat unused for years, particularly in rental units between tenants. A damper that won’t open fully traps smoke and gases; one that won’t close bleeds heated air up the flue all winter. We free, repair, or replace dampers in the same visit, using parts sized to the original firebox opening. In Cambridge’s tight housing market, where every heating dollar matters, a functioning damper pays for itself in a single season.
Firebox Repair
The firebox - the brick or refractory chamber where combustion actually happens - takes the most direct heat and shows it first. In Cambridge’s aging housing stock, we routinely find cracked refractory panels, deteriorating mortar joints, and heat-damaged brick that has been patched with standard mortar instead of the refractory compound the job requires. We repoint with HeatShield refractory mortar or replace panels as needed, and we show you the damage before we quote the fix. Done right - and we stand behind it.
Fireplace Conversion
Converting a wood-burning fireplace to gas in Cambridge requires more than running a line and installing a log set. The flue must be sized to the new appliance, the chimney must be inspected for liner compatibility, and in many triple-deckers, the flue serves multiple units that cannot be disrupted. We handle the full conversion, from gas line coordination to liner installation to final inspection, with permits pulled and documentation provided. We also convert gas back to wood where homeowners want the original function restored.
Trusted Brands We Service in Cambridge
We stock parts and materials from the brands that professional sweeps trust, not builder-grade substitutes that fail in Cambridge’s demanding conditions. Our trucks carry DuraFlex stainless liners, HeatShield refractory mortar and resurfacing systems, and Gelco chimney caps and dampers. For larger rebuilds and restorations, we source from Olympia Chimney and Copperfield. This inventory means faster turnaround for Cambridge customers - most repairs are completed in a single visit, without waiting for a parts order to arrive.
Common Fireplace Services Problems We See in Cambridge Homes
- Multi-flue chases with mismatched liners. In a Cambridgeport or East Cambridge triple-decker, one chimney often contains two, three, or even four flues - each relined in a different decade with a different material. A sweep who quotes a single-flue cleaning without per-flue Level 2 camera inspection misses the other flues entirely, and the mismatched configuration goes undocumented until it fails.
- Third-degree creosote in bare brick flues. Cambridge’s older wood-burning fireplaces, particularly in third-floor units where the flue runs cold, accumulate hardened creosote that standard brushing cannot remove. This glaze is combustible and restricts airflow, but it requires rotary or chemical treatment - not a harder brush.
- Spalling brick and open mortar joints from freeze-thaw damage. Cambridge’s 30-40 freeze events per winter hit exposed lime-mortar joints and brick crowns hardest. Tight urban lot spacing limits solar drying after rain and snowmelt, so water sits in the masonry, freezes, expands, and opens joints that were tight in October by March.
- Seized dampers and deteriorated fireboxes in long-vacant rentals. With over 60% of Cambridge’s housing stock in rental use, often with absentee landlords, fireplaces sit unused for years. The damper seizes solid, the firebox mortar crumbles from moisture cycling, and the first tenant to light a fire risks smoke backup or worse.
Pricing for Fireplace Services in Cambridge, MA
Here’s what fireplace service typically costs in Cambridge’s market:
- Gas fireplace tune-up and safety check: $180-$260
- Wood-burning fireplace sweep with Level 1 inspection: $220-$310
- Level 2 camera inspection (per flue): $280-$390
- Damper repair or replacement: $340-$580
- Firebox repointing or refractory panel replacement: $450-$890
- Fireplace insert removal, liner installation, and reinstall: $1,800-$3,400
- Wood-to-gas or gas-to-wood conversion (full): $2,400-$4,800
Costs run toward the higher end when we encounter unlined flues, multiple flues in one chase, or access constraints in Cambridge’s tight basements and narrow staircases. We agree on a flat price before booking - the number on the estimate is the number on the invoice. Estimates are free. Call (857) 392-4709 for an exact quote on your specific fireplace.
We Also Serve Cities Near Cambridge
Our crews work throughout the metro area. If you’re in Somerville, Belmont, Medford, or Brookline, the same technicians, same materials, and same 90-Day Done Right Promise apply. We coordinate Fireplace Services in Cambridge and surrounding communities from our Boston office, with local knowledge of each city’s housing stock and code requirements.
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 - Fireplace Services in Cambridge
You need a separate Level 2 camera inspection for each flue. In Cambridge’s triple-deckers, it is routine to find three or four flues in one chase, each relined at a different time with a different material. One flue may be safe while another has cracked tile or third-degree creosote. We inspect per flue, show you the footage, and quote only what each flue actually needs. Call (857) 392-4709 to schedule - estimates are free.
Yes. A fireplace that sits unused accumulates moisture, the damper seizes, and the flue may have been compromised by freeze-thaw damage or animal intrusion. In Cambridge’s rental market, where fireplaces often sit idle between tenants, we find that the “unused” ones frequently need the most work. We inspect, document with photos, and tell you plainly what can wait and what cannot. Call (857) 392-4709 for a free estimate.
Third-degree creosote is a hardened, tar-like glaze that forms when wood smoke cools and condenses in a flue that runs too cold - common in Cambridge’s tall, exterior chimneys and third-floor units. It is combustible and restricts airflow, but standard wire brushes cannot remove it. We treat it with a chemical modifier or remove it with a rotary chain system, then verify the flue is clean with our camera. Call (857) 392-4709 if you suspect heavy buildup.
Cambridge’s 30-40 annual freeze-thaw cycles destroy lime-mortar joints that were not formulated for modern freeze exposure, and tight urban lot spacing prevents masonry from drying fully between weather events. Repointing with standard Portland cement mortar makes the problem worse - it traps moisture behind a hard shell that spalls off in the next freeze. We use lime-based or compatible mortars that breathe and flex, matching the original construction. Call (857) 392-4709 for an inspection of the actual joint condition.
Yes, but the flue must be properly lined and sized to the new gas appliance, and in Cambridge’s multi-flue chimneys, we must confirm which flue serves your unit without disrupting neighbors. We pull permits, install a DuraFlex or Olympia Chimney stainless liner, and coordinate gas line work. The conversion is documented with photos and a final inspection report. Call (857) 392-4709 to discuss your specific chimney configuration.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Cambridge and local communities since 1984.