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Reviews for Sideris Plumbing & Heating Corp.

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  • March 2026

    I am extremely satisfied with my recent experience with Sideris Plumbing & Heating. John Jr. was professional, patient, and highly knowledgeable throughout the entire process. What initially began as an assessment of my unusually high-water bill and a concerning gas smell quickly turned into a thorough and insightful evaluation of my entire plumbing and boiler system.
    Living in a multifamily home, I find the boiler system to be complex, so I especially appreciated his keen attention to detail. He identified that my boiler for the second floor was incorrectly routed to the first-floor gas water heater, an issue I likely would not have discovered on my own.... read full review

  • January 2026

    I had a great experience with Sideris Plumbing & Heating. The boiler replacement was done in a very professional and clean manner. The team was punctual, explained the work clearly, and completed everything as promised. I’m very satisfied with the quality of their work and would definitely recommend them

  • January 2026

    Top-tier service! I called Sideris on a freezing day, and John saved the day. He fixed my boiler on the spot because he carries extra parts in his van—no waiting days for orders!

    John fixed the boiler, but also went above and beyond, performing safety tests and cleaning the boiler flues and coils at no extra charge! He even solved my years-long headache by installing a Google Nest Power Connector, finally fixing my thermostat’s power drainage issues caused by my old system.

    John is a fantastic communicator; he explained everything clearly despite working in tough, freezing conditions. The charges were very fair for the high level... read full review

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    Sideris Plumbing & Heating Corp.

    18-24 42nd St, Long Island City

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