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Conversion Options

NYC Clean Heat has transitioned into the NYC Retrofit Accelerator, New York City's new one-stop resource for energy and water efficiency. Learn more at

Conversion Options

Buildings that currently use No. 4 oil have a number of options for converting to cleaner fuels.  These include:

Ultra-Low Sulfur No. 2 oil, which is the cleanest heating oil available on the market and reduces fine PM emissions by over 95%.

Biodiesel, a renewable liquid fuel that has similar properties to No. 2 oil.  Biodiesel is typically mixed with heating oil at levels of 5%, 10% or 20% (known as B5, B10 and B20 respectively).  Buildings that use biodiesel are eligible for a tax refund from New York State.

Natural Gas, a gaseous fossil fuel primarily composed of methane that is supplied from a utility pipeline to the building. 

Steambuildings located in Con Edison's steam delivery territory in Manhattan can eliminate the need for an on-site boiler by receiving from the utility to heat their buildings.

Clean Energy Alternatives, such as thermal and combined heat and power (CHP), can power or suppliment existing heating systems to provide even cleaner heat to buildings.