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46 Years
experience
Emergency
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Expert Plumbing & Heating Services in NYC
Founded in 1980, Sideris Plumbing & Heating has built a reputation as a trusted family-owned provider of comprehensive plumbing and heating solutions in New York City. With over 45 years of combined experience, our licensed professionals specialize in residential and commercial services, including plumbing repairs, heating system installations, backflow prevention, fire suppression systems, and Local Law 152 gas inspections. We prioritize compliance with NYC Department of Buildings and Department of Environmental Protection regulations, ensuring durable, code-compliant work.

Our team of certified experts, including Licensed Master Plumber #819 and NYS Certified Backflow Tester #2762, delivers 24/7 emergency service and maintains membership in The Master Plumbers Council, Inc. We emphasize transparency, integrity, and long-term solutions, as evidenced by decades of repeat clients and positive referrals.
Services
Plumbing Heating Backflow Prevention Fire Suppression Gas Inspection
Details
  • Year established: 1980
Highlights and features
  • We offer 45+ years of combined experience in NYC plumbing and heating.
  • Our team includes Licensed Master Plumbers and certified backflow testers.
  • We provide 24/7 emergency service for urgent plumbing needs.
  • We guarantee compliance with NYC Department of Buildings regulations.
  • Our family-owned business prioritizes integrity and long-term solutions.
Associations and certifications
  • The Master Plumbers Council, Inc.
What people say
Prompt service Technical expertise Professional execution Reliable emergency response Code-compliant work
Services
Plumbing
We handle all residential and commercial plumbing needs, from leak repairs and fixture installations to sewer line maintenance and gas piping. Our licensed plumbers ensure code-compliant solutions that prioritize durability and efficiency. With 24/7 emergency availability, we address urgent issues promptly while maintaining adherence to NYC Department of Buildings standards.
Heating
Our experts install, service, and repair heating systems including boilers, furnaces, and radiant heat. We specialize in energy-efficient upgrades and oil-to-gas conversions, ensuring safe operation and compliance with NYC regulations. From annual maintenance to emergency repairs, we optimize system performance while minimizing downtime for residential and commercial clients.
Backflow Prevention
We design, install, and test backflow prevention systems to meet NYC Department of Environmental Protection requirements. Annual testing and compliance services ensure safe water supply systems for residential and commercial properties. Our certified technicians resolve violations and maintain systems to prevent contamination risks through specialized testing and maintenance protocols.
Fire Suppression
We ensure fire suppression systems comply with FDNY regulations through installations, inspections, and maintenance. Services include sprinkler system design, standpipe testing, and annual fire pump evaluations. Our team handles violation removal and certification for commercial properties, guaranteeing operational readiness during emergencies while meeting all local code requirements.
Gas Inspection
We perform Local Law 152 gas inspections, piping repairs, and carbon monoxide testing for residential and commercial clients. Our services include gas appliance installations, utility coordination, and code compliance verification. Licensed technicians handle permitting filings and emergency gas leak repairs, ensuring safe and compliant natural gas systems across New York City properties.
People
John J. Sideris Sr.
President
With over 45 years of experience, John leads our team as a Licensed Master Plumber #819. He ensures technical excellence and adherence to NYC building codes while maintaining direct client communication.
Kimona Seivewright
Operations Manager
Kimona coordinates service operations and client relations, ensuring efficient project execution. Her management ensures seamless scheduling and quality control across residential and commercial projects.
Cathy Kraszewski
Senior Bookkeeper
Cathy manages financial operations and building COI requirements. Her expertise streamlines billing processes and ensures compliance with regulatory documentation for commercial clients.
John J. Sideris Jr.
Lead Boiler Tech
Specializing in boiler systems, John Jr. oversees complex heating installations and repairs. His technical proficiency ensures optimal performance of commercial heating infrastructure.
Nick Kontogiannis
Service Manager
Nick coordinates field technicians and emergency response teams. He ensures timely service delivery while maintaining high standards for client satisfaction and technical accuracy.
Questions
What areas do you serve?
We serve all five boroughs of New York City, including Long Island City, Manhattan, Brooklyn, Queens, and the Bronx.
Do you offer emergency services?
Yes, we provide 24/7 emergency plumbing and heating services for urgent issues like leaks and system failures.
Are your technicians licensed?
Yes, our team includes Licensed Master Plumbers, NYS Certified Backflow Testers, and FDNY-certified fire suppression specialists.
What plumbing services do you offer?
We handle repairs, installations, sewer lines, gas piping, backflow prevention, and Local Law 152 gas inspections.
Do you handle commercial projects?
Yes, we serve residential and commercial clients with services including boiler maintenance, sprinkler systems, and code compliance.