John Duffy Energy

HVAC contractor
3.7(27 reviews)
John Duffy Energy

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About John Duffy Energy

John Duffy Energy has kept homes comfortable across West Orange and neighboring Essex County communities since 1891, making it one of the oldest continuously operating HVAC contractors in New Jersey. The company holds a 3.7-star rating compiled from 27 customer reviews, with service coverage extending to Newark, Elizabeth, Jersey City, Edison, and surrounding municipalities in Union, Middlesex, Morris, and Hudson counties. Their dual focus serves both residential homeowners seeking AC and heating repairs, and commercial clients requiring gas infrastructure solutions.

What distinguishes John Duffy Energy from regional competitors is their breadth beyond residential climate control. The company maintains a commercial gas division serving business properties, plus a motor fuels operation offering onsite fleet fueling, fuel storage systems, and equipment loans for commercial clients. This multi-service model allows the business to operate with 24/7 support availability, combining traditional HVAC expertise with energy distribution capabilities rarely found at a single contractor.

Customer reviews repeatedly credit specific technicians by name for memorable service experiences. Bryan earned praise for arriving on time, explaining each repair step, and professionally sealing every crack discovered during a heating system service. Reviewers also highlighted Gary and Andy as a dynamic duo who manage projects with Batman-and-Robin coordination, while Brian resolved a boiler that had produced noise for over 20 years. Another technician named Sam recommended a heat pump as a supplemental system during an AC replacement consultation.

What Customers Say

Four of five full reviews award 5 stars, with technicians Bryan, Brian, Sam, and the Gary-Andy team receiving direct praise for diagnostic clarity and professional manner. The single 1-star review cites communication delays with the service manager rather than technical skill, contrasting with positive reviewers who specifically mention responsive follow-through.

Services

Air Conditioning Repair & Replacement

Complete AC diagnostic, repair, and new system installation services for residential homes across their service area.

Heating System Service

Furnace and boiler repair, maintenance, and replacement ensuring winter warmth reliability.

Commercial Gas Solutions

Gas infrastructure installation and service for commercial properties and business facilities.

Onsite Fleet Fueling

Mobile fuel delivery directly to commercial vehicle fleets at their parked locations.

Fuel Storage & Tank Loans

Fuel management systems and equipment loans for businesses requiring storage solutions.

Frequently Asked Questions