Business Details
50+ Years
experience
Emergency
services
Trusted Plumbing & Heating Services on Long Island Since 1948
Gramman Plumbing, established in 1948 by Herbert Gramman, is a family-owned business serving Nassau County on Long Island. With three generations of experience, we specialize in residential and commercial plumbing and heating services, including water heater installations, sewer repairs, oil-to-gas conversions, and emergency services. Our commitment to quality, competitive pricing, and on-time service has made us a trusted choice for over 70 years. We utilize high-quality materials and certified technicians to ensure reliable solutions for every project. Available 24/7 for emergencies, we pride ourselves on maintaining the high standards set at our founding.Our service area includes Glen Cove, Roslyn, Port Washington, and surrounding Long Island communities. We offer free price quotations for large projects and prioritize customer satisfaction through professional execution and transparent communication. Our industrial department handles complex commercial needs, including process piping and fire sprinkler systems. As a locally rooted business, we understand the specific requirements of Long Island residents and businesses. Our team remains dedicated to resolving plumbing and heating issues efficiently, whether for minor repairs or comprehensive installations.
Services
Residential Plumbing
Residential Heating
Commercial Plumbing
Commercial Heating
Emergency Repairs
Oil to Gas Conversions
Water Heater Installations
Sewer Main Repairs
Fire Sprinkler Systems
Process Piping
Details
- Year established: 1948
Highlights and features
- Family-owned since 1948 with three generations of expertise
- 24/7 emergency service for urgent plumbing and heating needs
- Free price quotations for large residential and commercial projects
- Certified technicians with specialized training in all system types
- Locally rooted service covering Nassau County and Long Island towns
Services
Residential Plumbing
We handle all residential plumbing needs, from faucet repairs to sewer main installations. Our certified technicians use high-quality materials and provide cleanup after every job. Services include water heater replacements, leak repairs, bathroom renovations, and emergency plumbing services for Nassau County homeowners.
Commercial Plumbing
Our commercial plumbing services cater to Long Island businesses with solutions for restrooms, kitchen piping, grease traps, and fire sprinkler systems. We offer 24/7 emergency repairs, backflow testing, and process piping installations for restaurants, office buildings, and industrial facilities across Nassau County.
Residential Heating
We specialize in residential heating systems including oil-to-gas conversions, boiler installations, and annual maintenance plans. Our services cover steam, hot water, and radiant heating systems, with emergency repairs available 24/7 to keep Long Island homes warm during winter months.
Commercial Heating
Our commercial heating solutions include installation and maintenance of industrial boilers, steam systems, and infrared heating units. We service Nassau County businesses with 24/7 emergency support and offer free site visits for large-scale heating projects in office buildings, factories, and retail spaces.
Emergency Repairs
We provide 24/7 emergency plumbing and heating repairs for residential and commercial clients. Our rapid response team addresses urgent issues like burst pipes, heating failures, and water leaks across Long Island, ensuring minimal disruption to homes and businesses at any hour.
Questions
What services does Gramman Plumbing offer?
We provide residential and commercial plumbing and heating services, including repairs, installations, oil-to-gas conversions, emergency services, and fire sprinkler systems.
Do you offer emergency plumbing services?
Yes, we provide 24/7 emergency service for urgent plumbing and heating issues outside regular business hours.
Which areas do you serve?
We serve Nassau County and all Long Island communities, including Glen Cove, Roslyn, Port Washington, and Manhasset.
Are your technicians certified?
Yes, our team consists of certified professionals with specialized training in residential and commercial plumbing and heating systems.
How can I get a price quote?
Contact us at (516) 746-0045 or through our website for free price quotations on large residential or commercial projects.
Reviews (4)
John R.
Apr 11, 2022
Report
What a fantastic experience. Everyone was so helpful. Jackie, Maria and John. They all go the extra mile to ensure you are taken care of. Jackie was amazing helping with staying in touch with my management office which was no easy task. But most of all the quality of service and repairs are best in class. Thank you so much Gramman. I will always keep coming back.
Steve Serrano
Feb 25, 2022
Report
Gramman Plumbing is A+. Bobby and team (Pete, John, Kevin, Paddie, Tom, .) and the staff (Joanna, Jackie, Maria, Rose/Roe, .) are professional, responsive, and the best plumbing company that you could ever hope for. The best at kitchen plumbing, new bathroom, water heater, steam heating and boiler installation/repairs, radiant heating, water piping repairs, gas line installation, and anything plumbing & heating. Have worked with them for 20+ years and there's no better plumbing & heating company on Long Island.
Adam Li Power Guy
Jan 04, 2022
Report
Our company installs generators all across LI. Of all the plumbers I seen in my career (24 yrs) Gramman has done everything they said they will do and with good craftsmanship. They treat everyone with care and professionalism. I am sooo happy I have the pleasure to recommend them and work with them. Thank you guys keep up the good work. Adam @ Go Power Solutions
Jabiel Velazquez
Sep 01, 2021
Report
Very Professional /Great Craftsmanship/Great positive attitude Highly Recommend! Service: Pipe repair
