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All too often property managers and board presidents are being advised that a complete chimney liner replacement is necessary prior to the conversion from #6 heating oil to natural gas. A staggering number of these "recommendations" are coming in the absence of any formal lab testing or assessment of existing chimney liner materials. Average cost to replace a chimney liner is between 8-10k per floor!
Average cost to have a NYCDOB approved testing laboratory conduct an assessment on one (1) brick sample from an existing chimney liner to determine actual acid resistance and potential suitability for use in a combustion chimney liner: $3,800-$5,000.
In most cases the firm contracted to execute the conversion project should have a relationship with an approved lab and this firm should be willing to waive the analysis fee if you sign a contract with them to do the conversion project.
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This is what I am finding
In a pre-war building burning no. 6 - it is very likely a chimney will need to be lined. This is for gas burning and not needed if will only burn oil. It is estimated to be about $300 per foot installed.
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Board Talk members who registered prior to March 9th, 2016 will need to reset their password.