The last thing anyone wants is to be uncertain about how much heating oil is in the tank, but with John Duffy Energy Services, that’s never an issue. We’ve been heating and providing reliability and peace of mind to businesses across northern and central New Jersey ever since our inception more than a century ago, and our reputation for excellence is built on our superior brand of service, which includes free automatic delivery you can depend on.
465 Mulberry St Newark NJ 07114-2736
P.O. Box 5610, Newark, NJ 07105