LL97 New York: Cut Emissions Faster with Duct Sealing
If you own or manage a building over 25,000 square feet in New York City, Local Law 97 (LL97) is already in effect. Passed as part of the city’s Climate Mobilization Act, this law requires buildings to meet strict emissions caps or face serious financial penalties.
Starting in 2024, buildings that exceed their carbon limit could be fined $268 per metric ton of CO₂ over the cap—every year they fall short. That adds up fast.
Many building owners are looking at large-scale capital projects, but one of the most effective and least disruptive solutions is being missed: duct sealing.
The Hidden Cost of Leaky Ducts in LL97 New York Buildings
Leaky ductwork is one of the most common and costly sources of energy waste in large buildings. In fact, up to 40 percent of conditioned air can be lost through small gaps, cracks, and failed connections.
That loss forces HVAC systems to run longer and harder, using more energy and pushing carbon emissions higher. And under LL97 New York regulations, all of that waste counts against your compliance.
Duct Sealing as a Strategy for LL97 New York Compliance
Aeroseal provides a fast, verified way to cut this energy waste. Our patented process seals leaks from inside the duct system using a safe, computer-controlled system. No demo. No ceiling removal. No impact on tenants or operations.
Here is what buildings get when they use Aeroseal:
Up to 90 percent reduction in duct leakage
Lower HVAC energy use and smaller carbon footprint
Verified performance data to include in LL97 New York compliance reporting
Improved airflow, system performance, and occupant comfort
This is not theory. It is already working in hospitals, offices, universities, and multifamily buildings across New York City.
How Duct Sealing Supports Your LL97 New York Action Plan
LL97 requires building owners to take measurable steps toward reducing emissions. That might include system upgrades, lighting improvements, or operational changes. But duct sealing is one of the few strategies that can reduce energy use immediately and verify the results in real time.
It is also low cost compared to mechanical overhauls, and most projects qualify for utility incentives that help improve ROI.
If your team is building a long-term plan to comply with LL97 New York targets, duct sealing should be one of the first line items. It delivers measurable impact with minimal effort—and that is exactly what this moment calls for.
Start with Your Ducts Before the Fines Start with You
Local Law 97 is active. Fines are coming. And every ton of carbon saved today helps you stay compliant next year and beyond.
Aeroseal duct sealing is one of the fastest, cleanest, and most cost-effective ways to meet LL97 New York emissions targets.
Schedule a duct evaluation or contact us to learn more
The post LL97 New York: Cut Emissions Faster with Duct Sealing appeared first on Aeroseal.
