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A good home energy service is one that can keep you and your family comfortable throughout the year, with a minimum of hassle, and John Duffy Energy Services fits that bill perfectly.
Learn MoreA good home energy service is one that can keep you and your family comfortable throughout the year, with a minimum of hassle, and John Duffy Energy Services fits that bill perfectly.
Learn MoreA good home energy service is one that can keep you and your family comfortable throughout the year, with a minimum of hassle, and John Duffy Energy Services fits that bill perfectly.
Learn MoreJohn Duffy is family-owned and operated with a history spaning over four generations.
A people-first attitude and customer-driven approach defines our company values.
An authority in our field, we are devoted to providing high-quality energy solutions.
$89
Tune up your HVAC equipment yearly.
Just as a tune-up for your car can improve your gas mileage, a yearly tune-up of your heating and cooling system can improve efficiency and comfort.
Office Address
465 Mulberry St Newark NJ 07114-2736
Mailing Address
P.O. Box 5610, Newark, NJ 07105