The best equipment and superior service in Essex, Union, Middlesex, Morris and Hudson county, NJ

When you buy furnaces from John Duffy Energy Services, you’re buying from a company that’s been keeping customers happy ever since 1891. You’re buying from a company that doesn’t only sell heating equipment, doesn’t merely offer furnace repair and furnace replacement, but provides peace of mind to countless businesses throughout the New Jersey area:

  • great products
  • installation
  • maintenance
  • repair services
Everything we offer is backed with John Duffy Energy Services’ peerless service plans and around-the-clock emergency maintenance options. For more information on our furnace services, or on furnace prices, contact John Duffy Energy Services today! Serving Newark, Elizabeth, Jersey City, Edison, East Orange and surrounding towns in Essex, Union, Middlesex, Morris and Hudson county, NJ.

Office Address
465 Mulberry St Newark NJ 07114-2736

Mailing Address
P.O. Box 5610, Newark, NJ 07105