John Duffy Energy Services has been a family-owned and operated company since its 1891 inception. Its history spans four generations, but what remains consistent is the people-first attitude and customer-driven approach to sales and service that make the company tick. Whether you’re a residential or a commercial customer, looking for HVAC solutions or fleet fueling options, John Duffy Energy Services has staff members who are eager and equipped to provide you with peerless service and the very best products.
465 Mulberry St Newark NJ 07114-2736
P.O. Box 5610, Newark, NJ 07105