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DME MAINTENANCE • ESTABLISHED 2001 • PERFECT RECORD WITH SUFFOLK COUNTY CONSUMER AFFAIRS
SUFFOLK LICENSE #H-43223
SUFFOLKCHIMNEY.COM

DME MAINTENANCE

Suffolk County • Long Island

Chimney Damper Repair & Top-Sealing Damper Installation — Suffolk County

Cold drafts, stuck dampers, smoke smell in summer — all fixed with a top-sealing damper. Suffolk County's most overlooked fireplace upgrade. From $999 installed.

DME MAINTENANCE • ESTABLISHED 2001 • SUFFOLK LICENSE #H-43223

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Why Suffolk County Homeowners Replace Their Chimney Dampers

The chimney damper is the only movable component in your chimney system — and the one most likely to fail. Throat dampers (the traditional cast-iron plate inside the firebox) warp from heat, rust from moisture, and eventually stop sealing. When a throat damper fails to close fully, heated or cooled air escapes up the chimney 24 hours a day. The Department of Energy estimates a failed damper can add $200–$400 per year to heating and cooling costs in a Long Island home. Top-sealing dampers — installed at the top of the flue rather than inside the firebox — seal the chimney from above with a rubber gasket, eliminating both the draft problem and the moisture and animal entry that a failed throat damper allows. DME Maintenance installs top-sealing dampers county-wide starting at $999.

Top-sealing damper installation — seals flue from above with rubber gasket

Repairs stuck or warped throat dampers — firebox-level cast iron dampers

Eliminates cold drafts in winter and chimney odor in summer

Pairs with chimney cap replacement for complete top protection

Reduces heating and cooling costs — Energy Department estimates $200–$400/yr savings

Prevents animal and insect entry that a failed throat damper allows

Same-week installation — most jobs completed in under two hours

Transparent Pricing — Suffolk County

We publish our pricing because we have nothing to hide. Free estimates on all repair work.

Service Starting Price
Chimney Inspection in Suffolk County — Full 21-Point Safety Check $185+
Dryer Vent Cleaning in Suffolk County — Fire Prevention & Efficiency $165+
Chimney Cleaning & Chimney Sweep in Suffolk County $185
Suffolk Wood Fireplace Chimney Cleaning — Creosote Removal $275+
Suffolk Chimney Cap — Keep Water & Animals Out $285+
Chimney Damper Repair & Top-Sealing Damper Installation — Suffolk County $1,100+
Suffolk Chimney Crown — Seal, Recoat or Rebuild $435+
Chimney Pointing in Suffolk County — Restore Mortar Joints $660+
Stainless Steel Chimney Liner Upgrade — Suffolk County $1,750+
Chimney Repair in Suffolk County — Pointing, Crowns, Flashing & More Free estimate
Chimney Inspection for Home Buyers & Sellers — Suffolk County Free estimate
Emergency Chimney Service in Suffolk County — Same-Day Response Free estimate
Suffolk Gas Chimney Cleaning — Optimize Draft & Safety $185
Suffolk Oil Chimney Cleaning — Remove Soot & Residue $185
Suffolk Gas Fireplace Cleaning — Burners, Venting & Safety $195+
Suffolk Wood Stove Cleaning — Stove & Flue Maintenance $215+
Suffolk Pellet Stove Cleaning — Ash, Vent & Efficiency $215+
Suffolk Chimney Blockage Removal — Nests, Debris & Obstructions Free estimate
Suffolk Chimney Chase Cover — Custom Metal Protection Free estimate
Chimney Waterproofing with ChimSaver — Breathable Protection Free estimate
Prefab Chimney Repair & Replacement Suffolk County Free estimate
Chimney Flashing Repair in Suffolk County — Stop the Leak at the Source Free estimate
Carbon Monoxide & Chimney Safety in Suffolk County — What Every Homeowner Needs to Know Free estimate
Smoke Coming Into the House? Suffolk County Chimney Diagnosis Free estimate
Chimney Smell in Your Suffolk County Home — What It Means & How to Fix It Free estimate
Chimney Leaking Water in Suffolk County — Find the Source, Fix It Right Free estimate
Fall Chimney Cleaning in Suffolk County — Book Before the Rush $185+
Suffolk County Chimney Service Cost Guide — What Everything Costs in 2026 $165–$1,750+
Professional Power Washing in Suffolk County, NY $195+
Oil-to-Gas Chimney Conversion in Suffolk County — Liner Required by Code $1,750+
Chimney Rebuild in Suffolk County — Partial & Full Reconstruction $1,320+
Animals in Your Chimney — Suffolk County Removal & Cap Installation $285+
Chimney Inspections for Suffolk County Real Estate Transactions Free estimate

All repair work quoted free on-site. Prices are starting prices for standard Suffolk County conditions.

Frequently Asked Questions — Suffolk County Chimney Services

How much does chimney damper repair or replacement cost in Suffolk County?

DME Maintenance installs top-sealing dampers starting at $999 in Suffolk County. Throat damper repair is quoted on-site after inspection — call 516-690-7471. Top-sealing dampers are almost always the better long-term value: they seal tighter, last longer, and solve the summer odor and winter draft problem simultaneously.

What is the difference between a throat damper and a top-sealing damper?

A throat damper is the traditional cast-iron plate inside your firebox, just above the fire. A top-sealing damper installs at the very top of the flue and uses a rubber gasket to seal the chimney from above. Top-sealing dampers provide a far tighter seal, prevent animal entry, and eliminate summer odors — something a throat damper cannot do.

Why is cold air coming down my chimney even when the damper is closed?

A throat damper that appears closed rarely seals fully — the cast iron warps from years of heat exposure and leaves gaps. Cold air falls through these gaps continuously. A top-sealing damper eliminates this entirely by sealing the flue at the top with a rubber gasket rated for tight closure.

My fireplace smells like smoke in summer — is the damper the problem?

Usually yes. In summer, air-conditioned homes create negative pressure that draws air down the flue — pulling creosote and moisture odors with it. A failed or partially open throat damper has no defense against this. A top-sealing damper stops it completely, and an annual chimney cleaning removes the creosote that causes the odor.

Can I replace a chimney damper myself?

Throat damper replacement requires working inside a firebox and fitting a specific throat size — mistakes create a permanent draft problem. Top-sealing damper installation requires roof access and proper fit to your flue tile. DME Maintenance installs both types in Suffolk County — most jobs completed in under two hours. Call 516-690-7471.

What chimney services does DME Maintenance provide in Suffolk County?

DME Maintenance provides chimney cleaning (gas, oil, wood, fireplace, stove, pellet), chimney repair (pointing, crown, flashing, cap, chase cover, waterproofing), stainless steel chimney liner installation, prefab chimney service, and chimney blockage removal throughout Suffolk County, Long Island.

How much does chimney cleaning cost in Suffolk County?

DME Maintenance charges $165 for a standard gas or oil flue cleaning in Suffolk County. Wood-burning fireplace chimney cleaning starts at $195. All cleanings include a full safety inspection and written report. Call 516-690-7471 for an exact quote.

Is DME Maintenance licensed in Suffolk County?

Yes. DME Maintenance holds Suffolk County Consumer Affairs License #H-43223, in perfect standing since our founding in 2001. You can verify this record directly on the Suffolk County consumer affairs portal.

People Also Search / Voice Search

★★★★★ Nextdoor

“Liner installed for oil-to-gas conversion. All paperwork handled.”

Ruairi Healy. — Islip

★★★★★ Yelp

“Douglas explained everything before starting. No pressure, just facts.”

Mr. Saoirse Boyle. — Lake Ronkonkoma

★★★★★ SuffolkChimney.com

“Stainless liner installed for the gas conversion. Sized right, done in a day.”

Mrs. Colleen Burke. — Sayville

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DME MAINTENANCE • Suffolk County License #H-43223