John Duffy Energy Services

John Duffy Energy Services has kept Newark and surrounding Essex County homes comfortable for more than a century, tracing its roots back to 1891. The contractor holds 8 client reviews reflecting a 2.0-star average, signaling significant room for improvement in customer satisfaction. Operating from Newark, New Jersey, the team serves Elizabeth, Jersey City, Edison, East Orange and towns across Essex, Union, Middlesex, Morris and Hudson counties. Homeowners in these communities can access residential air conditioning and heating repair, replacement and maintenance through the company's (800) 246-3516 line.

What distinguishes John Duffy Energy Services is its breadth beyond typical HVAC work. Beyond residential climate control, the company handles commercial gas systems and operates a motor fuels division offering onsite fleet fueling, fuel storage solutions and tank loans. This diversification reflects an energy-services model rather than a narrow HVAC contractor, appealing to property managers and business owners who prefer consolidated vendors. The heating oil division serves customers who rely on fuel delivery, a service still common across older Newark-area homes.

Client feedback reveals a split experience. Limara Cebollero praises Harry for honest rate comparisons and industry knowledge, noting he proactively finds competitive offers and communicates transparently. However, multiple negative reviews cite a receptionist whose tone and manner distressed elderly customers, including Linda Andujar's 88-year-old mother and May May's 80-year-old grandmother. These incidents underscore that service quality varies significantly depending on which team member handles the interaction.