Air Conditioning

Air conditioning system installation & repair in central and northern NJ

Our air conditioning units are all installed by a friendly and highly-trained staff. These are professionals you can trust to install your unit perfectly and ensure that it’s running properly, keeping your household nice and cool during those long summer months. We install only energy-efficient brands and are all too happy to perform preseason tune-ups to ensure everything is functioning as it should.

Rely on us any time – day or night

We also provide air conditioning service plans that will afford you the comfort that comes in knowing that air conditioning repair is only a phone call away, 24/7, should anything ever go wrong. Our plans offer coverage on malfunctioning parts as well as regular air conditioning wear and tear—but given the superior brands we use, issues are uncommon.

Brands We Carry

  • Trane
  • American Standard
  • Goodman
  • Between these superior brands and our own superior service options,John Duffy Energy Services can be relied on to provide you with a comfortable living environment year-round. Contact us for more information about our air conditioning services, and find out how we can provide your household with the comfort it deserves.


    Trane: XL20i

    The Trane XL20i central air conditioning system is one of the most efficient units available today. The XL20i has been designed to deliver reliable, energy-saving cooling, even on the hottest day of the year.


  • Up to 20 SEER (Seasonal Energy Efficiency Rating).
  • ComfortLink™ II communicating control technology connects all system components and offers the option of remote wireless access.
  • Dual Climatuff® compressors. One compressor is used for milder weather and a second, larger compressor is utilized for extremely hot days. It’s like having two units in one.
  • American Standard: Allegiance 16 Communicating Air Conditioner

    The Allegiance 16 Communicating-air-conditioner keeps you comfortable, thanks to generous two-step cooling and incredible energy efficiency.


  • Automatically communicates and coordinates with your other system components via the AccuLink Communicating System.
  • Surpasses government efficiency standards, helping you save up to 50% on your energy bills while reducing greenhouse gas emissions.
  • Contains a two-step duration compressor with two-stage cooling, which runs at 70% capacity most of the time, and steps up to the second stage on the hottest days.
  • So quiet, you barely notice it’s running.
  • american-standard

    Goodman: DSXC16 Air Conditioner

    With this central air conditioning system, you will enjoy top quality, high-efficiency cooling and chlorine-free refrigerant – all at a refreshing affordable price.


  • Expanded ComfortAlert diagnostics built in
  • High-density foam compressor sound blanket
  • High- and low-pressure switches
  • Diagnostic indicator lights and storage of six fault codes
  • Color-coded terminal strip for noncommunicating setup
  • Factory-installed filter dryer
  • Two-speed quiet condenser fan motor
  • Contact us today for more information on an air conditioner installation, repair, or maintenance. John Duffy, 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