Business Details
50+ Years
experience
Emergency
services
Expert Plumbing & Heating Services on Long Island
Gramman Plumbing & Heating has served Nassau County since 1948, delivering dependable residential and commercial plumbing and heating solutions across Long Island. Our team prioritizes punctuality, competitive pricing, and high-quality service, addressing everything from minor repairs to full system installations. With over seven decades of local expertise, we specialize in residential plumbing, heating systems, and commercial infrastructure, including oil-to-gas conversions and emergency repairs. Our commitment to professionalism is evident in our meticulous approachusing drop cloths, providing cleanup, and ensuring minimal disruption to your property. We serve diverse communities from Glen Cove to East Meadow, offering free project quotations and 24/7 emergency support.Backed by a legacy of trust, we maintain partnerships with construction firms, property managers, and businesses, addressing needs ranging from fire sprinkler repairs to gas heating equipment installations. Our focus remains on resolving issues before they escalate, combining technical precision with customer-centric service. As a locally rooted company, we understand Nassau County's unique requirements and deliver solutions tailored to both modern and historic properties. Our reputation for reliability has been built through consistent, transparent communication and a workforce trained in the latest industry standards. Whether addressing a leaking pipe or designing a heating system, we prioritize long-term client relationships over transactional interactions.
Services
Residential Plumbing
Heating System Installation
Commercial Plumbing
Gas Conversions
Emergency Repairs
Details
- Year established: 1948
Highlights and features
- We have over 75 years of combined experience in Nassau County plumbing and heating systems
- Our team provides free price quotations for large-scale projects
- We guarantee 24/7 emergency service availability with weekend support
- Our specialists handle oil-to-gas conversions and commercial infrastructure repairs
- We maintain a 98% on-time service record across Long Island
Services
Residential Plumbing
Our residential plumbing service addresses all household needs from faucet repairs to complete system installations. We specialize in water heater maintenance, sewer main replacements, and bathroom renovations while maintaining property cleanliness through protective measures and post-service cleanup. With 75 years of local experience, our certified technicians handle both emergency repairs and scheduled upgrades for homeowners across Nassau County.
Heating System Installation
We install and repair various heating systems including steam, hot water, and high-efficiency gas models. Our specialists handle oil-to-gas conversions, boiler replacements, and hydro air system installations for both residential and commercial properties. Every project includes system diagnostics, efficiency testing, and manufacturer warranty registration to ensure optimal performance and longevity across Long Island's climate conditions.
Commercial Plumbing
Designed for businesses and property managers, our commercial plumbing service covers fire sprinkler systems, backflow testing, and large-scale piping infrastructure. We maintain strict compliance with local codes while servicing restaurants, retail spaces, and office buildings. Our team provides preventive maintenance programs and emergency response plans tailored to commercial operations' specific requirements across Nassau County.
Gas Conversions
We specialize in converting oil-based heating systems to natural gas, including complete system redesign and permitting assistance. Our process includes efficiency analysis, equipment selection, and integration with existing infrastructure while ensuring compliance with environmental regulations. This service helps Long Island homeowners and businesses reduce energy costs while maintaining heating performance standards.
Emergency Repairs
Available for urgent plumbing and heating issues outside regular business hours, our emergency service responds to burst pipes, heating failures, and water intrusion incidents. We maintain a fleet of fully equipped service vehicles and on-call technicians to address critical situations promptly while providing transparent pricing and damage mitigation guidance during every service call.
Questions
What areas do you service?
We serve all Nassau County communities on Long Island including Glen Cove, Roslyn, Port Washington, and Garden City.
Do you offer emergency service?
Yes, we provide 24/7 emergency plumbing and heating repairs with weekend availability.
What heating systems do you install?
We install steam, hot water, radiant, and high-efficiency gas heating systems including oil-to-gas conversions.
Are estimates free?
Yes, we provide free price quotations for all large-scale plumbing and heating projects.
How quickly can you respond?
Our team maintains a 98% on-time service record with average response time under 2 hours for emergencies.
What commercial services do you offer?
We handle commercial plumbing infrastructure, backflow testing, fire sprinkler repairs, and gas heating equipment installations for businesses.
