Oil-to-Gas Boiler Conversion Guide for Long Island
Navigating National Grid gas line connections, 95% AFUE condensing boiler upgrades, and oil tank decommissioning.
Converting an aging, inefficient oil boiler to a modern modulating gas boiler can reduce heating fuel expenses by 25% to 35% while eliminating fuel delivery scheduling and soot buildup.
The process requires coordinating with National Grid for gas service availability, sizing the gas meter and interior black iron gas piping, and filing local municipal mechanical permits.
Modern 95%+ AFUE condensing boilers vent directly through PVC or polypropylene pipe out a side wall, allowing abandonment of old brick chimney flues that may have deteriorated liners.
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