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John Duffy Energy Services

5.0
8 Verified Reviews

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100% Recommended

134 Years In Business

Company Details

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Contact

465 Mulberry St
Newark, NJ 07114
http://duffyenergy.com

Hours

  • Mon: 8:00 AM - 6:00 PM
  • Tue: 8:00 AM - 6:00 PM
  • Wed: 8:00 AM - 6:00 PM
  • Thu: 8:00 AM - 6:00 PM
  • Fri: 8:00 AM - 6:00 PM
  • Sat: Closed
  • Sun: Closed
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Service Details

  • Residential Work
  • Commercial Work

Areas of Expertise

  • Winter Sale going on RIGHT NOW!
  • Boiler Experts - Steam or Hot Water
  • Oil-Gas Conversions are our specialty - Furnaces and AC experts!
  • Financing readily available!
  • Highest Rated on Angi's List & Home Advisor
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Deals

Cost Information

  • Free Estimates
  • Warranty Offered
  • Credit Cards Accepted

  • Save $1300

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Ratings

5.0
8 Verified Reviews
  • 5
    8
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    0

Highly rated for

  • Overall Rating
  • Value
  • Customer Service
  • Quality

Reviews

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Showing 1-8 of 8 results
5.0 Wendy and victor J. Fair Lawn, NJ
6/21/2024

Jimmy and his team of plumbers and electricians were courteous, clean and worked quickly to replace our faulty high efficiency boiler with a new one. The foreman was also very knowledgeable on the unit. Richard the sales rep was also great and very responsive to all our questions before, during and after our project. I would recommend this company, check with them and definitely hire them again for future projects. Job well done!

5.0 Jorge I. Fanwood, NJ
4/24/2023

Very professional service

5.0 Thomas M. Newark, NJ
8/2/2022

Didn't end up doing the work because the advice was that I couldn't really do it with a small space. This was good advice

5.0 Guy G. East Orange, NJ
5/18/2022

They took over a messy job-in-progress, delivered a clear estimate of the work required, got us on their schedule, and did a good job. Sticking with them for ongoing service, too.

5.0 Antonio M. East Brunswick, NJ
8/21/2021

Good

5.0 Kenneth S. Somerset, NJ
7/22/2021

Very responsive, Very clean while working and cleaned up the area afterwards and removed all the trash

5.0 Lisa G. West Milford, NJ
6/4/2021

These guys came in below everyone else as far as price. When I said that I have 3 other companies coming to give an estimate. Gary said â I know what these things cost. Itâ s my jobâ . He also said this is the bottom line price and it was not one penny more. After the install a pipe burst. Nothing to do with what they did. It was due to age. They came out and replaced it at no charge. I recommend them to everyone. Great job Gary and Mario.

5.0 Kevin M. Lancaster, PA
10/23/2018

They are very nice, very professional and good at what they do. They have been serving my family's heating and cooling needs for generations.

Showing 1-8 of 8 results Showing 0 of 0 results
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John Duffy Energy Services
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