Stainless Steel Chimney Liner Installation in Nassau County
A stainless steel chimney liner is the most important safety upgrade available to Nassau County homeowners. Original clay tile flue liners — standard in all pre-2000 construction — crack from thermal cycling, settle with the house structure, and deteriorate from acidic condensate. A cracked liner is a carbon monoxide pathway. Heat from a cracked liner can also transfer to adjacent framing and cause a slow-smoldering house fire. Flexible stainless steel liner systems are inserted from the top of the chimney, run continuously from the appliance connection to the flue cap, and seal at every joint. They are sized precisely for your specific appliance to ensure optimal draft. DME Maintenance is factory-authorized and has been installing liners in Nassau County since 2001.
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Sized precisely to appliance BTU output and flue length
Insulation wrap installed where required by code or manufacturer
Full written documentation — liner specs, install date, warranty
Final draft test with appliance running confirms correct operation
How a Stainless Steel Chimney Liner Is Installed — DME Maintenance Nassau County
Flue Assessment
We measure your flue height and diameter, assess the existing liner condition, and determine the correct liner size for your appliance's BTU output.
Obstructions Cleared
Any debris, broken tile, or collapsed liner sections are removed to allow clean passage of the new liner from top to bottom.
Liner Inserted
The flexible stainless steel liner is fed from the top of the chimney down to the appliance connection point. Insulation wrap is installed where required by code.
Connections Sealed
The top plate is installed and sealed at the flue opening. The liner is connected and sealed at the appliance collar with high-temperature sealant.
Draft Test
The appliance is operated and draft is confirmed before we leave. Written documentation of liner specs, installation date, and warranty is provided.
What Customers Say
Anita Sharma
Syosset • January 2026
“They coordinated with my plumber and handled the permit paperwork. Smooth process.”
★★★★★Nick Viola
Bellmore • December 2025
“Oil-to-gas conversion needed a new liner. Permitted, installed, passed inspection.”
★★★★★William Hall
Great Neck • November 2023
“They explained the sizing rationale. Correct diameter for the appliance BTU rating.”
★★★★★Frequently Asked Questions
How much does chimney liner installation cost in Nassau County?
DME Maintenance installs stainless steel chimney liners starting at $1,670 in Nassau County. Final cost depends on flue height, required liner diameter, and whether insulation wrap is required. Call 516-690-7471 for a free assessment.
Do I need a new chimney liner when converting from oil to gas in Nassau County?
Yes. Oil-to-gas conversions require a stainless steel chimney liner under Nassau County code. The original oil flue is typically oversized for gas venting and contains oil residue that deteriorates with gas combustion. A properly sized stainless liner is required before the new appliance can be put into service.
How do I know if my chimney liner needs to be replaced?
Signs include: home over 25 years old with no liner inspection, replacing your furnace or boiler, carbon monoxide detector alerts, white staining (efflorescence) on chimney brick, or a video inspection revealing cracks. Schedule an annual chimney cleaning and we assess liner condition during every visit.
What brands of chimney liner does DME Maintenance install?
DME Maintenance is factory-authorized for stainless steel chimney liner installation. We install flexible, rectangular, oval, and insulated liner systems — all with a lifetime warranty.
Is a chimney liner required by Nassau County code?
Yes, in most circumstances. Nassau County municipalities require a properly sized, code-compliant liner for all gas and oil appliances. Liner installation by DME Maintenance meets all Nassau County requirements under License #H0101570000. After installation, we recommend an annual chimney cleaning to maintain liner performance.
Quick Answers
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Nassau County Pricing Guide
| Service | Starting Price |
|---|---|
| Chimney Cleaning (Gas or Oil Flue) | $165 |
| Chimney Inspection (Level 1) | $165+ |
| Gas Chimney Cleaning Nassau County NY | $165 | Licensed | $165 |
| Oil Chimney Cleaning Nassau County NY | $165 | Same Week | $165 |
| Wood Fireplace Chimney Sweep | $249+ |
| Gas Fireplace Cleaning Nassau County NY | $175+ | Licensed | $175+ |
| Wood Stove Cleaning Nassau County NY | $195+ | Same Week | $195+ |
| Pellet Stove Cleaning Nassau County NY | $195+ | Licensed | $195+ |
| Chimney Blockage Removal Nassau County NY | Same Day Service | Free estimate |
| Chimney Repair / Blockage / Waterproofing | Free estimate |
| Chimney Cap Installation | $255+ |
| Chimney Crown Repair | $395+ |
| Chimney Chase Cover Nassau County NY | Custom Steel | Free Estimate | Free estimate |
| Chimney Pointing | $600+ |
| Chimney Waterproofing Nassau County NY | ChimSaver | Free Estimate | Free estimate |
| Prefab Chimney Service Nassau County NY | Repair & Replacement | Free estimate |
| Stainless Steel Chimney Liner | $1,670+ |
| Level 2 Inspection (Home Sale) | Free estimate |
| Emergency Chimney Service | Free estimate |
| Chimney Damper (Top-Sealing) | $999+ |
| Dryer Vent Cleaning | $149+ |
| Chimney Flashing Repair Nassau County NY | Stops Leaks | Free Estimate | Free estimate |
| Carbon Monoxide & Your Chimney Nassau County NY | Safety Inspection | Free estimate |
| Smoke Coming Into House Nassau County NY | Same-Week Diagnosis | Free estimate |
| Chimney Smell in House Nassau County NY | Odor Diagnosis | Free estimate |
| Chimney Leaking Water Nassau County NY | Diagnosis & Repair | Free estimate |
| Fall Chimney Cleaning Nassau County NY | Book Now | $165+ | $165+ |
| Chimney Service Cost Guide Nassau County 2026 | Real Prices | $149–$1,670+ |
| Power Washing Nassau County NY | Driveways, Decks, Siding | $175+ |
| Oil to Gas Chimney Conversion Nassau County NY | Liner Required | $1,670+ |
| Chimney Rebuild Nassau County NY | Partial & Full | Free Estimate | $1,200+ |
| Animals in Chimney Nassau County NY | Removal & Cap Install | $255+ |
| Chimney Inspections for Real Estate Agents — Nassau County NY | Free estimate |
Prices are starting rates. Free on-site estimates for all repair work. Call 516-690-7471.
Chimney Liner Nassau County NY | Stainless Steel | From $1,670 — Free On-Site Estimate
Same-week appointments • Written inspection report • Nassau License #H0101570000