One licensed team handling everything from a leaking pipe to a full dormer build. Serving homes and businesses across Nassau and Suffolk County since 2004 — licensed, insured, and answering the phone at 3am when it matters.
22+ YEARS ON LONG ISLANDLICENSED & INSURED · NASSAU & SUFFOLK
PLUMBING · HEATING · COOLING · CONTRACTING
Have An Emergency? We’re Available 24/7.
631-587-0085WE ANSWER EVERY CALLMost Long Island homeowners end up juggling a plumber, an HVAC company, and a contractor. NJM handles all of it — one number to call, one crew on site, and nobody pointing fingers when something goes wrong.
MASTER PLUMBER
Licensed Master Plumber on staff for everything from a slow drain to a full repipe — residential and commercial, across Nassau and Suffolk County.
NAVIEN NSS CERTIFIED
Boilers, furnaces, geothermal and radiant floor systems installed and serviced by technicians who answer the phone in January.
ALL MAJOR BRANDS
Central air, ductless mini-splits, and commercial cooling — installed right the first time and serviced fast when a Long Island heat wave hits.
LICENSED & INSURED
Dormers, additions, kitchens and baths — with the plumbing and HVAC handled in-house instead of subbed out to whoever is available.
A bathroom renovation is a plumbing job, a contracting job, and usually an HVAC job. Hire three companies and you get three schedules, three invoices, and three sets of excuses when the tile guy shows up before the pipes are moved.
NJM does all of it under one roof. Same licensed team, same project manager, one point of accountability from demo to final inspection — for homes and businesses across Nassau and Suffolk County.
See exactly where we’re licensed →
Get A Free Estimate
Based in North Babylon, working across both counties — close enough to get there fast, local enough to know the housing stock and the permit offices.
Proudly serving all of Nassau and Suffolk County, with deep local roots near our North Babylon home base.
Get A Free Estimate5 out of 5 stars
The experience I had with with NJM Mechanical & Contracting was a pleasant one. I had the pleasure of doing business with Neil. The work I had done was a basement entrance to my yard and it came out wonderful. The work performed as well as the communication is 10/10.
5 out of 5 stars
Neil has handled all my A/C needs over the years. He's very communicative and open about service charges. He never steers you wrong
5 out of 5 stars
As always, Neil is a pleasure to have as my plumber. He is so professional and knowledgeable. I wouldn't use anyone else! I highly, highly recommend him.
What it says on the coupon is what comes off the bill. Mention it when you call.
All of Nassau County and all of Suffolk County. North Babylon is our home base, so Babylon, West Babylon, Lindenhurst and Deer Park are minutes from the door — but we are out across both counties every day, from Massapequa, Farmingdale and Hicksville through to Commack and Dix Hills. Those are the towns we get asked about most, not the limit of where we go. If you are not sure whether you are in range, call 631-587-0085 and we will tell you straight.
Yes, without qualification. Burst pipes and dead boilers do not wait for business hours, so emergency calls are answered 24 hours a day, every day of the year — including nights, weekends and holidays. Regular office hours are Monday through Friday 7:00 AM to 6:00 PM and Saturday 7:00 AM to 5:00 PM.
Fully licensed and insured, with a Master Plumber on staff. We are also TASK 86/87 certified for gas work and Navien NSS certified for high-efficiency and tankless systems. We pull permits and handle inspections as part of the job, not as an afterthought.
Both. We work on single-family homes, multi-family properties, offices, restaurants, and retail spaces across Long Island. Commercial jobs get the same licensed crew and the same response times.
That is the whole point of NJM. Most renovation work touches all three trades, and coordinating separate companies is where projects fall apart. We have been doing it under one roof since 2004 — one team, one schedule, one point of accountability.
Estimates are free and come with no obligation. Tell us what is going on and we will give you a straight number. Fill out the form on this page and we will be in touch within 24 hours, or call 631-587-0085 for anything urgent — that line is answered around the clock.
Yes, for diagnostic visits — where something has failed and nobody knows why yet. It buys a licensed technician's time to find what has actually gone wrong, and it is one rate across plumbing, heating, cooling and gas. We give you the figure on the phone, before anyone is dispatched, and after-hours, weekend and holiday calls are quoted the same way. Estimates for new installations and renovation work are free.
Yes. A new boiler, a full air conditioning system or a dormer is a significant amount of money to find at once, and financing means the work can happen when it needs to happen rather than when the savings catch up. Ask us about it when you call and we will walk you through the options for your job.
NJM Mechanical & Contracting has served Long Island since 2004 — over 22 years of plumbing, heating, cooling, gas, and contracting work for homes and businesses across Nassau and Suffolk County.
Plumbing, heating, cooling, gas, and contracting from one licensed Long Island team. Free estimates, 24/7 emergency response, and 22+ years of doing it right.
