About Gallaghers Plumbing, Heating & AC

Founded in 1980 in the Ironia section of Randolph Township, Gallagher’s Plumbing & Heating Inc. has grown into one of New Jersey’s most respected family-owned HVAC and plumbing companies. Built on honesty, quality workmanship, and strong relationships, we’ve proudly served homeowners and contractors for nearly four decades.

 

Our company began with Dave Sr., his brother-in-law Jim working in the field, and wife Diana managing the office. In the early years, we specialized in heating system installations—both new and replacement—as well as plumbing for new home construction and renovations. With the housing boom of the mid-1980s, we quickly expanded our services and began working with major builders like Toll Brothers, Kaplan, K. Hovnanian, Beazer Homes, and Ryan Homes, along with numerous custom home contractors.

 

As our business grew beyond its home-based roots, we relocated to Hackettstown in 1988, where we continue to operate today. Since then, we’ve built a reputation for providing high-quality plumbing, heating, and HVAC services at competitive prices—earning the trust of both individual homeowners and large construction partners.

 

Our success stems from a dedicated and professional team—both in the office and in the field. Every job, large or small, is completed with the same care, attention to detail, and pride in craftsmanship. We understand that plumbing and HVAC projects, new builds, or home renovations can feel overwhelming. That’s why our knowledgeable staff is always here to answer questions, guide you through the process, and ensure the experience is as smooth as possible.