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 Fireplace Services Across Lexington
Fireplace repair, sweeping, and conversion in Lexington, MA typically costs $180-$650 depending on the service, and most appointments are scheduled within a few business days. Our crews serve Lexington from our Boston office, carrying NFPA 211 Level 2 camera equipment and the Haven Standard documentation kit on every truck. Call (978) 481-2900 for a written estimate before any work starts.
We’ve worked on Lexington fireplaces since 2009, from the center-chimney colonials ringing the Battle Green to the postwar ranches off Waltham Street and the split-levels near Lexington High. Whether you’re burning cordwood through winter on a rural property or running a gas insert in a 1960s garrison colonial, the conditions here are specific, and the inspection should be too.
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.
Why Level Two Chimney Leominster Is Lexington’s Preferred Fireplace Services Company
Lexington homeowners research before they call. They read three-star reviews. They want a text when the tech is en route. We built our process for exactly this customer.
We’ve completed more than 38,000 chimney inspections and cleanings since 2009. Every one had a written price before work started and a documented photo record when finished. Clause 4 of the Haven Standard requires that photo record. It’s not optional. It’s not an upsell.
Our technicians are background-checked, uniformed, and named before arrival. You’ll get a text when they’re on the way. License information is displayed on every page, and our live phone support runs 24 hours a day, 7 days a week. No voicemail, no web form.
The 365-Day Done Right Promise backs every job: if it’s not done right, we make it right. And our Free Second Opinion on any written estimate means you can bring us a competitor’s quote and we’ll tell you exactly what we see.
Our Fireplace Services in Lexington

Wood Burning Fireplace Service
Wood-burning fireplaces in Lexington face a specific stress: eastern Massachusetts freeze-thaw cycles cross 32°F dozens of times each winter, spalling soft lime mortar in pre-1800 stacks and heaving flashing on postwar homes. Water gets in, and water keeps creosote active in the masonry even after the flue is brushed clean.
On rural Lexington properties where a wood stove is primary heat, creosote loads far heavier than suburban intermittent use. The safe sweeping interval shortens. First-degree flaky buildup can reach glazed third-degree tar in a single season of smoldering, damp wood. A brush won’t touch third-degree creosote. It requires chemical treatment or rotary removal.
We inspect with a camera down the flue, classify the creosote degree, and write the scope and price before any work starts. If your Lexington home heats with wood, we’ll tell you honestly whether once-a-year is enough or whether twice-a-year keeps you inside safe margins.

Gas Fireplace Service
Many Lexington homes converted from oil to gas during the 1970s energy crisis or in subsequent decades, leaving clay tile flue liners unsized for the new appliances. Condensing gas exhaust is acidic. It eats clay. We’ve found deteriorated liners in 1960s ranches off Marrett Road and 1970s colonials near Fiske Hill where the original clay has spalled to half its thickness.
Our gas fireplace service includes burner inspection, gas pressure testing, and a camera evaluation of the flue liner condition. If the liner is compromised, we quote replacement in writing using DuraFlex or Olympia Chimney materials sourced through Haven’s buying network. No work starts until you have the written price, scope, and warranty in hand.

Fireplace Insert Installation & Service
Inserts are common in Lexington’s older homes where the original fireplace is too inefficient for modern use. But an insert installed without proper flue sizing or liner connection creates the same hazards it was meant to solve. Smoke backdraft. Carbon monoxide migration. We’ve seen it on Hancock Street, on Massachusetts Avenue, and in the historic core near the Battle Green.
Our insert work starts with a Level 2 inspection and flue mapping. We verify the liner connection, check clearance to combustibles, and document everything with photos. Installation includes a written warranty and the 365-Day Done Right Promise. If you’re considering an insert for a Lexington colonial or cape, we’ll tell you whether your chase can handle it safely.

Damper Repair & Firebox Repair
Damper failure in Lexington often traces to one of two causes: rust from years of unlined gas condensation, or creosote corrosion in wood-burning systems. A stuck or broken damper costs you heated air up the flue and can prevent proper draft on cold starts.
Firebox repair addresses cracked or spalling refractory panels, deteriorated mortar joints, and heat-damaged brick. In Lexington’s historic center-chimney colonials, the firebox may be original lime-mortared brick rather than modern refractory panels. Repair requires matching materials and, for homes within the Historic Districts Commission jurisdiction, attention to exterior visibility rules. We handle both the masonry and the documentation.

Fireplace Conversion
Converting a Lexington wood-burning fireplace to gas or electric requires evaluating the existing flue, liner, and chase capacity. Gas conversion in a multi-flue center-chimney stack demands careful flue assignment. You cannot vent a new gas insert into a flue still connected to an active wood-burning fireplace on another level. Cross-draft between flues is a real hazard in these configurations.
We map the chase, identify each flue’s current use and condition, and quote the conversion with a written scope that specifies liner material (typically DuraFlex or Olympia Chimney for gas applications), termination height, and compliance with Lexington’s mechanical code. The original flue is either relined for the new appliance or properly sealed and documented as abandoned.

Before
AfterTrusted Brands We Service in Lexington
We stock and install materials from DuraFlex, HeatShield, Gelco, and Olympia Chimney, procured through Haven’s buying network to keep customer prices honest. For Lexington homeowners, this means faster turnaround on liner replacements, firebox repairs, and cap installations. We don’t order after the fact and make you wait. Our trucks carry common diameters and fittings for the liners and components we see most in Lexington’s housing stock, from 6-inch flexible gas liners to 8×12 clay-to-stainless transitions in historic multi-flue chases.
Common Fireplace Services Problems We See in Lexington Homes

- Smoke backdraft on cold starts in center-chimney colonials. On streets close to the Battle Green - Massachusetts Avenue, Hancock Street, Bedford Street - multiple flues share one exterior chase with no clear labeling. An active wood-burning flue beside a sealed oil flue can create pressure imbalances that roll smoke into the room until the flue warms. Full flue mapping before any cleaning identifies the configuration and lets us advise on proper damper sequencing.
- Glazed third-degree creosote in rural wood-heating homes. Lexington properties using wood stoves as primary heat load creosote faster than suburban intermittent fireplaces. Smoldering loads, damp wood, and long burn cycles produce glossy, tar-like third-degree buildup that a standard brush won’t remove. We identify the degree with camera inspection and quote rotary cleaning or chemical treatment when needed.
- Spalled lime mortar and cracked crowns from freeze-thaw. Pre-1800 stacks with soft lime mortar erode faster than modern Portland-cement construction. Postwar homes suffer crown and flashing damage from nor’easter ice accumulation. Water intrusion through cracked caps accelerates creosote absorption into masonry and can destroy liner integrity from the outside in.
- Unsized clay liners in converted gas systems. The 1950s-1970s belt of ranch and split-level homes often converted from oil to gas without relining. Acidic condensate attacks clay tile. We’ve found liners in Marrett Road-area homes where the clay has degraded to the point of near-collapse, creating both draft hazard and potential carbon monoxide leakage into wall cavities.
Pricing for Fireplace Services in Lexington, MA
| Service | Typical Range in Lexington |
|---|---|
| Level 2 inspection with camera scan & photo record | $180-$260 |
| Wood-burning fireplace sweep (standard creosote) | $220-$310 |
| Gas fireplace service & safety check | $180-$250 |
| Fireplace insert installation with liner | $2,800-$4,500 |
| Damper repair or replacement | $340-$580 |
| Firebox refractory panel replacement | $450-$780 |
| Fireplace conversion to gas (liner, connection, permit) | $3,200-$5,800 |
| Third-degree creosote removal (rotary or chemical) | $480-$720 |
These ranges reflect Lexington’s market, including the additional time required for flue mapping in historic multi-flue chases and the freeze-thaw-related masonry conditions common here. Every job is quoted in writing before work begins - Haven Standard Clause 1, H.A.V.E.N. “Have it in writing.” No exceptions. Estimates are free. Call (978) 481-2900 for your specific quote.
We Also Serve Cities Near Lexington

Our Fireplace Services crews work throughout eastern Massachusetts, including Pinehurst, Maynard, Lowell, and Framingham. Scheduling and dispatch are coordinated from our Boston office, with local technicians assigned to minimize drive time and keep appointment windows reliable. If you’re searching for Fireplace Services in Lexington or nearby, the same Haven Standard process applies: written price first, camera documentation included, 365-Day Done Right Promise on completion.
Serving Lexington, MA - Our Local Coverage Area
We’re based in the Lexington 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 Lexington

Twice a year is the safer interval for primary-heat wood stoves in Lexington, especially in rural properties with longer burn seasons. A wood stove loading creosote continuously can reach glazed third-degree buildup in a single season, and third-degree creosote cannot be brushed out with standard equipment. We classify creosote degree during every Level 2 inspection and set your schedule based on what we find, not a calendar default. Call (978) 481-2900 for an exact quote - estimates are free.

Cross-draft between unlabeled flues in a shared chase is the most common cause. Your active wood-burning flue may share an exterior chase with a sealed oil flue or an abandoned fireplace flue, creating pressure imbalances that reverse smoke flow on cold starts until the flue establishes proper draft. We map every flue in the chase before cleaning and can identify which damper sequence and venting configuration eliminates the backdraft. This is not a problem suburban sweeps see often; it’s routine for us in Lexington’s historic core.

Yes, conversion is common, but the original flue must be evaluated and usually relined with properly sized stainless steel for the new appliance. In Lexington’s multi-flue center-chimney stacks, we must also verify that no other active flue creates cross-draft hazard with the new gas vent. The original clay liner, if intact, is either removed or left in place with the new liner installed inside it. We quote this in writing with specific liner material, termination height, and permit requirements. Call (978) 481-2900 for a written scope and price.

Water intrusion through a cracked crown keeps masonry saturated, and saturated masonry absorbs creosote from the flue gases. Even after the flue is brushed clean, the creosote trapped in the brick continues to off-gas and can accelerate new buildup. In Lexington, nor’easter ice accumulation on crowns is a reliable annual cause of cracking. Freeze-thaw heaves flashing joints on postwar homes and spalls soft lime mortar on pre-1800 stacks. Crown repair or replacement stops the water feed and protects your sweep investment.

Yes. Properties within Lexington’s Historic Districts Commission jurisdiction require commission approval for any exterior chimney repair or alteration visible from the public way. This includes crown replacement, cap installation, and exterior pointing or rebuilding of historic brickwork. Interior flue lining and firebox repair typically do not require commission review. We document the visible condition with photos and can advise whether your specific project triggers review. Our written scope notes any permitting layer so you’re not surprised mid-project.
Written by Corrine Halstead, Owner at Level Two Chimney Co., serving Lexington since 2009.






Before
After
Before
After
Before
After