NATURAL GAS ALARMS ARE NOW REQUIRED IN NEW YORK CITY
Buy Now!Here's What You Need to Know
Local Law 157 (LL 157) is a New York City ordinance that requires natural gas alarms to be installed in residential buildings by January 1, 2027
Alarms must be labeled to meet the UL1484 Standard
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Step 1: Choose the Best Natural Gas Alarm Step 2: Buy Alarm to Protect You and Your Home Step 3: Learn Where to Install Your AlarmGet Your Natural Gas Alarm Today
View AlarmsDecide Which Natural Gas Alarm Fits Your Needs
Step 1: Choose the Best Natural Gas Alarm Step 2: Buy Alarm to Protect You and Your Home Step 3: Learn Where to Install Your Alarm
WHO MUST COMPLY WITH LL157?
Private dwellings: Permanent dwellings/apartments/homes
Class A multiple dwellings: One and two-family houses
Class B multiple dwellings: Transient housing-hotels, lodging houses, dorms, etc.
The installation of natural gas alarms in residential buildings helps reduce the risk of undetected gas leaks and explosions. Responsibility primarily falls on building owners, with defined roles for tenants.
Property Owner Responsibilities:
Install compliant natural gas alarms
- Ensure alarms are properly located
- Replace alarms at the end of their useful life
- Comply with manufacturer and NFPA 715 standards
Tenant Responsibilities:
- Maintaining alarms during occupancy
- Replacing alarms that are: Removed, missing, damaged, or inoperable
Alarms Must Comply with NFPA715 Installation
- Placement should be on or within 12 inches from the ceiling On the wall within 12 inches of the ceiling or on the ceiling
- Alarms should be horizontally placed 3-10 feet from the gas appliance
- Alarms should be 5-10 feet horizontally from gas stoves
DeNova Detect Natural Gas Alarms mount high on the wall near the ceiling, satisfying the compliance requirement without wiring or cords.
For more information and FAQs on LL 157, visit: https://www.nyc.gov/site/buildings/property-or-business-owner/natural-gas-detector-faqs.page
Where Natural Gas Alarms Must Be Installed
In any area containing a natural gas appliance, including:
- Kitchens (stoves)
- Laundry areas (gas dryers)
- Utility rooms (water heaters)
- Boiler/mechanical rooms
In both:
- Private spaces (apartments)
- Common/public areas
Replacement & Lifecycle
This is not a “one-time install” requirement. It is an ongoing compliance obligation.
Replacement is based on:
- Manufacturer’s stated lifespan
- Performance and operability
Where Natural Gas Alarms Must Be Installed
In any area containing a natural gas appliance, including:
- Kitchens (stoves)
- Laundry areas (gas dryers)
- Utility rooms (water heaters)
- Boiler/mechanical rooms
In both:
- Private spaces (apartments)
- Common/public areas
Replacement & Lifecycle
This is not a “one-time install” requirement. It is an ongoing compliance obligation.
Replacement is based on:
- Manufacturer’s stated lifespan
- Performance and operability
Why Your Natural Gas Alarm Must Have the ETL or UL logo?
Read HereDeNova Detect Gas Alarms Help Save Lives!
- 10-Year Battery-Operated alarm (never replace batteries)
- Voice Alerts in English and Spanish with clear evacuation instructions
- Virtually zero nuisance alarms (tested by Gas Technology Institute)
Opportunities For You
Questions? Contact Ryan Lazarus: ryan@zeitsev.com or call 630.301.8740
The Case for 10 YR Local Law 157 Natural Gas Alarms in NYC
After the devastating gas explosion in Harlem in 2014 that leveled a building, leaving eight people dead, and a second explosion in the East Village in 2015 that killed two and injured twenty, New York City passed Local Law 157 (LL157). While LL157 required smoke detectors carbon monoxide detectors in every residence in New York City...
In The News
El despliegue de alarmas de gas natural de New York Con Edison mejora la seguridad
El despliegue de alarmas de gas natural de New York Con Edison mejora la seguridad
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Contact UsAbout DeNova Detect
Since 1964, New Cosmos Electric Continues To Be The World-Leader In Residential Gas Explosion Prevention.
OUR MISSION.
For over 65 years, we have been protecting people and property with innovative gas safety products. Our products create safe and secure spaces with the most advanced sensor technology possible. We adhere to the highest safety standards while offering the best value to our customers.
WHAT WE DO.
Our desire to design safe and comfortable environments always has and always will be at the core of who we are and what we do. We are currently the leading supplier of residential methane detectors in the global market with sales of over 70 million gas alarms.
WHY CHOOSE US.
We have developed and perfected a wide variety of products featuring our world-class gas sensor technology that include residential and industrial gas alarms, portable gas detectors, and odor sensors.
Established in 1960 and headquartered in Osaka, Japan, New Cosmos Electric has revolutionized the natural gas industry by providing reliable solutions and unmatched innovation. New Cosmos Electric is the global leader in gas sensor production and development. Our innovative product line and six decade history of success is a reflection of our commitment to our customers to always remain one step ahead.
New Cosmos Electric is the world leader in gas sensor production capacity and development. Our Micro-Electro Mechanical Systems (MEMS) technology has been implemented in gas sensors for a proven and substantial reduction in size and power consumption, allowing for the successful development of battery-powered Natural Gas Alarms.
We offer one of the earliest natural gas detection available in the US market (10% LEL) and our products significantly improve safety in residential and commercial settings. Our unique hot-wire semiconductor sensors offer high sensitivity for best-in-class gas detection. We strive to continually provide the highest value in life-saving technology by continuously optimizing our gas sensor technology.
New Cosmos Electric www.newcosmos-global.com/ formed a wholly owned subsidiary - New Cosmos USA, INC. in 2018. New Cosmos USA is headquartered in Chicago and has developed the DeNova Detect brand to provide gas alarms to some of the largest utility companies in the U.S. today. Our global team remains committed to deliver cutting-edge safety solutions to our customers in order to detect and protect what matters most.