Deegan Plumbing is a full service plumbing and heating company. Presently, the company has twelve employees. Ninety percent of our plumbers have over 25 years of experience with 2 plumbers having over 40 years of experience. Three of our plumbers are New York State certified backflow testers. Some of the plumbing services we offer are repairs, backflow installation and testing, alterations and renovations and new construction. Some of the heating jobs we offer are radiant heat installation, boiler work and new gas installations.

Over the years, we have done just about every plumbing & heating job you can think of, so if you don’t see what you’re looking for, just give us a call. We are available to discuss and offer you free estimates on any plumbing or heating work that you need.

Our work is always fully guaranteed.

Whether it is putting a washer in your faucet, remodeling your bathroom, installing a new heating system or building a new house, Deegan Plumbing hass the plumbers to call for all your plumbing and heating needs. We offer prompt and courteous service and look forward to offering you our expertise in the plumbing and heating industry.

Deegan Plumbing predominantly serves the plumbing and heating needs of the North Shore of Long Island.

We often do work in Asharoken, Bayville, Bethpage, Carle Place, Centerport, Centre Island, Cold Spring Harbor, Cove Neck, East Hills, Farmingdale, Garden City, Glen Cove, Glen Head, Great Neck, Great Neck South, Halesite, Hicksville, Huntington, Huntington Bay, Jericho, Kensington, Kings Point, Lake Success, Lattingtown, Laurel Hollow, Lloyd Harbor, Locust Valley, Manhasset, Manorhaven, Mill Neck, Mineola, Munsey Park, Muttontown, Northport, Old Westbury, Oyster Bay, Oyster Bay Cove, Plainview, Plandome, Port Washington, Roslyn, Roslyn Estates, Roslyn Heights, Sands Point, Sea Cliff, Syosset, Thompson, and Westbury. If your city wasn’t listed, don’t worry, we probably do work there as well! Just give us a call.