• January 8, 2025

Understanding Local Law 157: Protecting New Yorkers from Gas Explosions

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Local Law 157 was enacted in response to tragic gas explosions that have rocked New York City in recent years, drawing attention to the need for more stringent safety measures in buildings. These explosions, caused by gas leaks in poorly maintained systems, highlighted the dangers of aging infrastructure and insufficient safety protocols. In this post, we’ll dive into Local Law 157’s requirements for gas detectors, explain how the law addresses gas-related hazards, and discuss how smart boiler controls can play a pivotal role in maintaining safety and compliance.

What is Local Law 157?

Local Law 157, passed in 2016, aims to prevent gas explosions and other disasters by requiring building owners to implement proactive safety measures. Specifically, it mandates the installation of gas detection systems in buildings to detect dangerous gas leaks, particularly in high-rise apartments and commercial buildings.

The law calls for the installation of natural gas detectors in any unit with a natural gas hookup (such as an oven or dryer) and that building owners regularly maintain them. When gas levels reach unsafe concentrations, these detectors can alert residents and building personnel, giving them time to address the issue before it leads to catastrophic consequences.

Why Was Local Law 157 Created?

The introduction of Local Law 157 came after the city witnessed several deadly gas explosions, which exposed significant gaps in the safety of building systems. In March 2014, an explosion in East Harlem caused by a gas leak resulted in multiple fatalities and destroyed buildings, leaving an indelible mark on the city’s awareness of the risks posed by aging infrastructure. Similarly, other gas-related incidents and deaths, such as the explosion in the East Village in 2015, underscored the need for more stringent measures to protect New Yorkers from gas-related hazards

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How do I comply with Local Law 157?

Gas detectors are the cornerstone of Local Law 157, and their proper installation and maintenance are key to complying with the law. Gas detectors are designed to sense the presence of hazardous levels of natural gas, which poses a serious health and safety risk when undetected.

Building owners must install gas detectors in areas where gas leaks are most likely to occur, with specific locations within residential units to ensure maximum effectiveness – such as in kitchens where there are gas fueled appliances such as ovens, any other room with a gas appliance such as a dryer, and near the gas meter or service line to the building. These detectors monitor the air for dangerous gases and can trigger alarms or send alerts if concentrations exceed safe levels. This early detection allows building managers to act quickly—ventilating the area, evacuating tenants if necessary, and immediately repairing the source of the gas leak.

Which Buildings Need Gas Detectors?

Local Law 157 applies to a broad range of buildings across New York City. Any building with gas-powered heating, hot water, or cooking systems must install gas detectors. This includes residential buildings, commercial properties, and mixed-use spaces where gas appliances or systems are present.

By When Do the Gas Detectors Need to be Installed?

Local Law 157 has a compliance deadline of May 1, 2025 – less than six months away. Property managers should begin planning efforts to ensure their buildings will be in compliance by the deadline. Planning includes assessing how many detectors are required for their property, choosing and purchasing the types of detectors they want to use, and installing them in advance of the deadline.

What Are the Installation and Inspection Requirements for Gas Detectors?

It’s important to be aware of the requirements based on the type of detector being installed. Battery operated and plug-in detectors can be installed by building owners and personnel, or tenants, while hardwired detectors require the expertise of a licensed electrician. The detector must be installed within 3-10 feet of the appliance, either on the ceiling or the wall within a foot of a ceiling.

Building owners are required to regularly inspect their gas detectors, ensuring they are functioning correctly and that batteries or power sources are replaced as needed. Inspections should be carried out at least once per year. Failure to perform inspections or maintain detectors can result in fines or penalties. 

What Happens if a Building Fails to Comply with Local Law 157?

Failure to install or properly maintain gas detectors can lead to hefty fines for building owners. In the event of a gas explosion or serious accident linked to a failure to comply with the law, building owners may face severe legal and financial consequences, including liability for damages and potential lawsuits from affected tenants.

What Are the Costs of Installing Gas Detectors?

The cost of installing gas detectors varies depending on the size and complexity of the building. A basic off-the-shelf battery operated or plug-in detector averages $50 per detector, with wired models costing significantly more. Additionally, the law stipulates that battery operated detectors can be installed by building personnel, whereas wired detectors would require professional installation by a licensed electrician – which adds more to the cost. Most property managers and owners can have the base requirements of LL157 handled by their building personnel quickly & efficiently. 

For those that appreciate technology and innovation, there is also the opinion of a smart gas detector. Smart detectors operate as a regular onsite detector, with the added bonus of remote monitoring and alarming. 

How Can Smart Gas Detectors Improve Safety and Compliance?

Smart gas detectors offer an enhanced solution for building owners looking to stay compliant with Local Law 157. Unlike traditional gas detectors, which may only sound an alarm when dangerous levels are reached, smart gas detectors can send real-time alerts directly to building management. This allows for immediate action without delay.

Smart detectors can also track historical data, providing insights into trends in gas usage and potential leaks. These systems often connect to an integrated building management system, such as Entech’s Stealth, allowing building operators to monitor conditions remotely and schedule maintenance proactively.

By using smart gas detection technology, building owners can ensure continuous monitoring and reduce the risks of failing to detect a leak early. They also simplify compliance by automatically storing data for regulatory reporting and providing reminders for inspections and system checks.

What does this have to do with Entech and boiler controls? 

At Entech, we are all about smart technology and running buildings more efficiently. In addition to gas detectors, smart boiler controls are another important tool for ensuring safety and compliance with Local Law 157. Boilers, particularly older models, can pose significant risks if not properly maintained. Smart boiler systems monitor key performance metrics—such as temperature, pressure, and gas consumption—and alert building owners to any irregularities.

Smart boiler controls help ensure that boilers are operating within safe parameters, reducing the risk of gas leaks or malfunctions. These systems can even predict when maintenance is needed by tracking trends and identifying small issues before they become major problems. By integrating gas detectors with smart boiler controls, building owners create a comprehensive safety network that maximizes their building operations and efficiency.

Are there rebates for smart gas detectors?

Unfortunately, utility programs such as Con Edison and National Grid are not providing rebates for smart gas detectors themselves. The good news is, there are rebates for boiler controls and energy management systems through Entech that can significantly offset the cost. By bundling your Entech Stealth controls with smart gas detectors, you can benefit from the controls rebates available, while complying with Local Law 157 – as well as Local Law 97, which has the same compliance deadline as LL157.

A Proactive Approach to Gas Safety

Local Law 157 ensures that building owners take proactive steps to protect both tenants and property. The addition of smart gas detection systems and smart boiler controls further enhances building safety, helping owners comply with regulations while preventing costly accidents.

Though the law comes with new responsibilities for building owners, it’s clear that these measures will ultimately save lives and reduce the risk of disasters. By embracing these technologies, owners can safeguard their properties, remain compliant, and contribute to the overall safety and well-being of New York City.

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