The Diligent Mechanical Services, a fourth-generation, privately owned and operated company since 1928, is New York’s preeminent provider of plumbing, heating & air conditioning, fire protection and green solution services. The company is dedicated to preserving and building its distinguished reputation for professionalism and reliability. Over the years the company has played a vital role in New York City’s construction industry. The company’s 4 divisions – Diligent Plumbing, Diligent Heating & Air Conditioning, Diligent Fire Protection and Diligent Green Solutions.
|Date Range for Inspection||Date Range for Inspection|
|January 1, 2020 – June 30, 2021||1, 3 and 10 in all boroughs|
|January 1, 2021 – June 30, 2022||2, 5, 7, 13, and 18 in all boroughs|
|January 1, 2022 – December 31, 2022||4, 6, 8, 9, and 16 in all boroughs|
|January 1, 2023 – December 31, 2023||11, 12, 14, 15, and 17 in all boroughs|
|January 1, 2024 – December 31, 2024||1, 3 and 10 in all boroughs|
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The year in which your initial LL 152 Gas Inspection or certification
PROA One type of additive is a polarized refrigerant oil additive (PROA),
Even as the proposed water service rate increases, the revised figure would
Safety, Compliance, Maintenance and Repair Services The below is a general guide
New York City has multiple local laws that require periodic inspection and