A picture of an automotive engine.

GreenNY Specification: Engine Block Heaters

Covered Products

Engine block heaters for use in vehicles equipped with diesel engines.



Engine Block Heater: an electric heater that heats the engine of a vehicle to ease starting in cold weather.



It is recommended that all diesel-fueled vehicles include engine block heaters or other warming technologies to reduce fuel consumption, decrease pollution, extend the engine life, and create reliability with cold-start operation. The engine block heater shall be UL approved (Underwriters Laboratory Inc.), and sized and installed as per the manufacturer's recommendations.

For diesel-fueled vehicles that were purchased prior to this recommendation, please refer to the vehicle manufacturer for retrofits.