Proudly serving Nassau County since 1948, Gramman Plumbing and Heating Corp. has been servicing both residential and commercial customers on Long Island for over seventy years. While the face of Long Island has changed during that time, there is one thing that remains the same: Our commitment to dependable, on time and competitively priced service of the highest quality, for all your plumbing and heating needs.
Residential Plumbing Services: In and around the home, no plumbing job is too big, or too small. From faucets to water and sewer mains, water heaters, leaking valves and pipes, bathroom facelifts or complete installations and so much more, our team of professionals take every care while in your home, using drop cloths and providing cleanup on every job.
Residential Heating Services: Our full service heating specialists can troubleshoot all phases of repair and installation for your home heating system. A small sampling of our specialties include oil to gas conversions, repair or installation of steam, hot water, radiant, high efficiency and hydro air gas heating systems, installing boilers, water heaters, dryers, piping, pool heaters and much more.
Residential Plumbing Services: In and around the home, no plumbing job is too big, or too small. From faucets to water and sewer mains, water heaters, leaking valves and pipes, bathroom facelifts or complete installations and so much more, our team of professionals take every care while in your home, using drop cloths and providing cleanup on every job.
Residential Heating Services: Our full service heating specialists can troubleshoot all phases of repair and installation for your home heating system. A small sampling of our specialties include oil to gas conversions, repair or installation of steam, hot water, radiant, high efficiency and hydro air gas heating systems, installing boilers, water heaters, dryers, piping, pool heaters and much more.
Services
Gramman Plumbing & Heating, established in 1948 by Herbert Gramman, is a family owned and managed business serving residents and businesses of Nassau County on Long Island with a complete range of plumbing and heating services. Today, Gramman Plumbing & Heating continues to operate under the same high standards set forth over seventy years ago and has grown to become one of the largest family owned service businesses in Nassau County.
When you need plumbing services for your home in Nassau County, the service fleet at Gramman Plumbing is fully equipped to make general plumbing repairs on the spot, on our first visit. Our certified technicians will take every care while in your home; using drop cloths and ensuring full clean up on every plumbing job.
From oil to gas heat conversions and the service, repair and installation of all heating system components, if your heat goes out, you can count on the heating specialists at Gramman Plumbing and Heating Corp. to keep your family warm all winter long. Additionally, our popular annual pre-winter checkup plan can ensure your heating system is ready for the cold season.
Reviews (13)
Bryan Fenn
Sep 13, 2021
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Jabiel Velazquez
Sep 01, 2021
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Jacqueline Weber
May 05, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Gramman Plumbing installed a brand new gas heating system & hot water heater. The work crew did an impeccable job and was courteous and considerate. I am sure that I will continue to use their services and would definitely recommend them. I am just sorry that I haven’t used their services before now.
Service: Boiler installation
Gramman Plumbing installed a brand new gas heating system & hot water heater. The work crew did an impeccable job and was courteous and considerate. I am sure that I will continue to use their services and would definitely recommend them. I am just sorry that I haven’t used their services before now.
Service: Boiler installation
Sandeep Divekar
Apr 14, 2021
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We are very happy with the service provided by the Gramman team. We noticed that water wasn't as hot or even warm enough, so called Gramman (was evening, and after-hours). Nick suggested that he would have someone take a look next day, and suggested few things like unplugging electricity from water heater and turning off water into the heater. Next day got a call little before 8am from them, and they arranged for a technician to have a look within the hour.
Keith, the tech, stopped by as advised by their phone rep. Maria, and gave us a quote after inspecting the problem and speaking with their
Keith, the tech, stopped by as advised by their phone rep. Maria, and gave us a quote after inspecting the problem and speaking with their
Chris Coyne
Apr 04, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
Gramman is the absolute best. you could not ask for a better plumbing team. Bobby and his crew, from the office staff to the workers onsite are top notch. Pete, Pat, Danny, Bobby all do exemplary work
Services: Pipe repair, Tap repair, Boiler repair, Leak investigation and repair
Gramman is the absolute best. you could not ask for a better plumbing team. Bobby and his crew, from the office staff to the workers onsite are top notch. Pete, Pat, Danny, Bobby all do exemplary work
Services: Pipe repair, Tap repair, Boiler repair, Leak investigation and repair
Vincent Manago
Feb 27, 2021
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Our heating boiler died out the week before Christmas; Bob Gramman and his team of professionals had a brand new boiler installed and running the day before Christmas. In addition under new Village codes the new boiler had to be externally vented which created a problem in our finished basement. Bob’s team of expert plumbers skillfully figured out… a way to vent the system to the outside with minimal disruption to our finished basement. I believe Bob and his team are reputable and conscientious. In addition I found his back office staff to be considerate, courteous, and always very
Peter Wain
Dec 12, 2020
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Gramman Plumbing and Heating is a one stop shop, no need to look elsewhere. They are experts in their trade, the workmanship is impeccable. I hired Gramman for a oil to gas conversion in my house, its a project that needed to be completed to perfection and these guys did not disappoint. They earned every bit of 5 stars in my book. A bunch of plumbing companies on long island and these guys compete with the best of um.
Elle Lorriane
Nov 12, 2020
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Gramman Plumbing is very responsive and professional. ... always pointing out your options before you commit to anything. Honest and reliable. We use them for our boiler service and any plumbing issues we have due to living in an old home. We also used them for our Oil to Gas coversion and they left our basement immaculate. Always giving you a very detailed written estimate so you can think things through. Great company with amazing friendly plumbers.
Michael Seeley
Nov 02, 2020
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I've worked with Gramman plumbing twice and both experiences have been wonderful.
The first was a situation in which carbon monoxide was spilling into my home due to a lack of draft in the chimney.
I had reached out to several plumbing companies and chimney companies, none of which could give me a definitive answer or solution.
Enter Bobby. He took the time to trouble shoot several potential solutions, ran calculations to make sure there was enough air for combustion and ultimately found the right solution, which was switching from an automatic electric start to a standing pilot light, which
The first was a situation in which carbon monoxide was spilling into my home due to a lack of draft in the chimney.
I had reached out to several plumbing companies and chimney companies, none of which could give me a definitive answer or solution.
Enter Bobby. He took the time to trouble shoot several potential solutions, ran calculations to make sure there was enough air for combustion and ultimately found the right solution, which was switching from an automatic electric start to a standing pilot light, which
James Dunn
Aug 22, 2020
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High quality, professional, courteous and clean work. Their plumbers wore special shoe coverings and brought in other special equipment to make sure that my house stayed clean. They did high-quality and clean work. They knew their stuff. The most reliable plumbers that I have hired. If you want to hire a plumber who stands behind their work and not have to worry about any issues, I recommend Gramman Plumbing.
Morten Rudbeck Sorensen
Feb 07, 2019
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We recently had an oil to gas conversion performed by Gramman Plumbing.
It was a pleasure to have a team, led by Pat, come into our home. They practically laid down a red carpet treating our house like a million-dollar home. The team worked in less than ideal conditions, maneuvering around our crowded dusty basement and leaving it cleaner than… they found it. They left no trace of the old oil boiler and oil tank, and they deftly removed everything without leaving a scrap of anything inside or outside our home. In particular, they respected our neighbor's newly paved driveway, which is located
It was a pleasure to have a team, led by Pat, come into our home. They practically laid down a red carpet treating our house like a million-dollar home. The team worked in less than ideal conditions, maneuvering around our crowded dusty basement and leaving it cleaner than… they found it. They left no trace of the old oil boiler and oil tank, and they deftly removed everything without leaving a scrap of anything inside or outside our home. In particular, they respected our neighbor's newly paved driveway, which is located
Jessica Poulin
Sep 26, 2016
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Frank Wu
Jul 20, 2016
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I did an oil to gas conversion after my oil boiler gave out. Grumman's plumber Rob and Nick were very punctual and clean and friendly. The installation of the new gas boiler and indirect water heater was very professional and neat and orderly. It took three day for them to complete the project and we are thrilled with the outcome. I would highly recommend them for any plumbing related work.
