What Chimney Services Cost in Nassau County in 2026 — Honest Pricing

The most common question DME Maintenance gets, before any other question, is: how much does it cost? It's a reasonable question. Chimney service pricing in Nassau County varies significantly — not because companies are making up numbers, but because scope varies enormously based on chimney condition, access, and what's actually needed. Here's the honest breakdown.

Chimney Cleaning

Gas or oil flue cleaning starts at $165 for a standard single-flue system in Nassau County. That includes the cleaning, a full Level 1 safety inspection, and a written report. Wood-burning fireplace chimney sweeping starts at $195 and goes to $295 for chimneys with significant creosote buildup requiring extended treatment. Dryer vent cleaning starts at $149 and is frequently combined with chimney service in a single visit.

Chimney Inspection

Level 1 inspection is included with every cleaning. Standalone Level 1 inspection is quoted on-site based on chimney configuration. Level 2 inspection — required for home sales, after chimney fires, or when liner condition is unknown — is quoted free on-site and includes camera inspection with a written report formatted for real estate attorneys and mortgage lenders.

Chimney Caps

Stainless steel chimney cap installation starts at $255 for a standard single-flue cap. Multi-flue caps and custom configurations are quoted on-site. Stainless is standard — galvanized caps rust faster and cost more over time, particularly on South Shore homes near the water.

Chimney Crown Repair

Crown recoating starts at $395 for a standard single-flue crown. Full crown rebuilds are quoted on-site based on chimney width and height. Crown repair combined with ChimSaver waterproofing in a single visit is the most cost-effective approach — the waterproofing protects the repaired crown and the masonry below it.

Chimney Pointing

Chimney pointing (repointing deteriorated mortar joints) starts at $400 for a typical section. Full chimney repointing runs $600 to $900+ depending on chimney height, number of courses, and accessibility. All pointing quotes are provided on-site after assessment — over-the-phone pointing quotes are unreliable because scope can only be determined by seeing the chimney.

Chimney Liner Installation

Stainless steel chimney liner installation starts at $1,670 in Nassau County. Final cost depends on flue height, required liner diameter, insulation requirements, and permit fees. Oil-to-gas conversion liners are the most common liner installation we perform — the sizing requirements and documentation needs are well-established. Written, itemized estimate provided on-site before any work begins.

Top-Sealing Damper

Top-sealing damper installation starts at $999 in Nassau County. The top-sealing damper replaces or supplements a failing throat damper and seals the flue from above — eliminating cold drafts, summer chimney odors, and energy loss. Installed in a single visit.

What Makes Chimney Pricing Vary

Chimney condition is the biggest variable. A cap installation on a clean, accessible chimney with a solid crown is straightforward. The same cap installation on a chimney where the crown is failing and the upper mortar joints are deteriorated requires additional work to do correctly. The second variable is how long the problem has been deferred — small repairs done promptly are always less expensive than the same problem ignored for years. DME Maintenance provides free on-site estimates for all repair work with written, itemized pricing before any work begins.