With 30+ years of diverse project experience, expert personnel, and the latest equipment, PJM can handle a wide range of complex projects. By partnering with clients and contractors, we provide the following services: 

  • Construction & Installation

  • Design/Build

  • Service & Maintenance

  • Fabrication

  • Sewer & Drain Services

  • Backflow Preventer Testing & Certification

  • Boom Truck Services

From project planning through scheduling, execution, and completion, we work hard to exceed the expectations of every client. 

Rooftop AHU Crane Lift
Rooftop AHU Crane Lift
Rooftop AHU Crane Lift
DB Central Chilled Water Plant
Central NJ Mall Plumbing Project
Central Utility Plant Retrofit
Construction of New CDC
Insurance HQ Construction Project
Cooling Tower Replacement
Emergency Repair at Pharma Plant
Chiller Repl. at Testing Facility
Central Utility Plant Renovation
Community College D/B Project
University Renovation Project
Mechanical Renovation Project
Community College D/B Project
Global Manufacturer CUP Project
Mechanical Renovation Project
D/B Central Chilled Water Plant
HVAC Renovation Project
Prominent NJ University AHU Project
University Mechanical Renovation
AHU Replacement Project
Hospital Cooling Tower Replacement
High-Efficiency Boiler Plant
University Mechanical Renovation
Construction of New CDC
Central Utility Plant Renovation


At PJM, we hold ourselves to a higher standard on every project we do
With over 30 years’ experience in every phase and discipline of mechanical construction, PJM is equipped to handle challenging projects of any scale, from initial planning through startup and commissioning, in the commercial, institutional and industrial markets.

Large, Small, and Fast-Track Projects: PJM Delivers
From complex central utility plants, ground-up plan-and-spec projects, and major mechanical room renovations to fast-track equipment replacements, emergency shutdowns, and system upgrades, PJM’s expert team of mechanical engineers and technicians can deliver cost-effective solutions to meet every client’s specific needs. State-of-the-art BIM and rapid positioning equipment provide highest-level precision, enabling us to consistently deliver projects on-time and on-budget. 

Safety is Priority #1
PJM Mechanical Contractors is wholly committed to health and safety on every project, as evidenced by our exemplary safety record and ISNetworld A-rating.


Design/Build is an efficient system of project delivery in which a contractor is retained to deliver a complete project, from initial concept through final commissioning. The design/build approach provides clients with a sole source of accountability, enhancing collaboration and alleviating conflicts that can occur between design professionals and contractors on traditional plan-and-spec projects.

PJM’s design capabilities and 30+ years of experience in a complete range of mechanical disciplines allows us to offer highest-quality design/build services.  Each D/B project is designed and built-to-budget while providing clients with a wide range of options tailored to their specific needs. The PJM Design/Build Group brings owners and project team members together early on, allowing for better engineering, lower project costs, faster project delivery, and a better overall client experience. On average, design/build projects are delivered 33% faster and cost 6% less than plan-and-spec.


Expert Service and Maintenance

PJM’s expert, fully-trained service technicians are highly regarded in our industry for their superior diagnostic abilities and can handle even the most complex equipment and system repairs. We provide comprehensive preventive maintenance programs and will gladly custom-design a PM program to meet your facility’s specific needs. PJM service techs are on call 24 hours a day, 7 days a week for off-hours emergencies.

Not Just HVAC

Unlike most contractors, PJM specializes in a full range of mechanical disciplines including but not limited to heating, cooling, ATC, plumbing, refrigeration, and building automation. 


  • Heating

  • Cooling

  • ATC

  • Plumbing

  • Refrigeration

Optimize HVAC System Performance and Efficiency with Energy Engineering

PJM can help clients get a handle on utility costs with our Energy Engineering Program. We perform expert analysis of your HVAC system to develop and implement cost-effective strategies to maximize performance and save energy.


PJM provides highest-quality prefabricated ductwork, carbon steel pipe, and fittings of all sizes for rapid pickup, delivery, or installation. All items are professionally fabricated in our full state-of-the art shop using provided specifications, or PJM can provide on-site measuring and design assistance. No fabrication job is too large, small, or complex for our expert team of fabrication professionals. 


PJM Mechanical Contractors, Inc. is fully certified to perform backflow preventer testing and certification and can assist customers with all BFP maintenance and repair needs. Periodic inspection and testing of backflow prevention devices is strictly regulated by local, state and federal agencies. At minimum, BFP testing should be performed annually, and may be required as frequently as every three months depending on the facility.


PJM provides a range of sewer and drain services including:

  • Video Inspection

  • Water Jetting

  • Sewer & Storm Drain Cleaning

PJM can locate problem areas, clogs, obstructions, leaks and broken or deteriorated pipes with pinpoint accuracy using our state-of-the-art camera and recording equipment. We provide mechanical cleaning sewer and storm drain cleaning methods as well as water-jetting, which powers away obstructions and scours pipes to restore full, free-flowing capacity without the use of chemicals. PJM offers 24/7 emergency service.


PJM offers the services of our 22-ton boom truck and licensed crane operator for our clients’ hoisting needs. Our boom truck is suitable for lifting small to mid-sized rooftop units, associated HVACR equipment, materials, and supplies to the roofs of small office buildings or warehouses. Please consider our services for your next lift.

 1688 5th Street | Ewing, NJ  08638 | Tel: 609.921.1394 | Fax: 609.530.1437

Plumbing Lic. #7969 | HVAC Lic. #19HC00113011 | MBE Cert. #72727-21

© 2017 PJM Mechanical Contractors, Inc.  Website by: Classy Websites NJ/NYC

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