Learn what insulation R-values mean for commercial roofs and walls, continuous insulation requirements, and how to...
Energy
Efficiency
By NYC Energy Code
Team
1 November 2026
Featured stories
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Energy Efficiency Air Sealing in Multifamily Buildings: Where the Big Leaks Hide
Discover where the largest air leaks hide in NYC multifamily properties and how targeted envelope sealing cuts heating costs...
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Energy Efficiency How Building Insulation Ratings (R-Values) Affect Compliance Costs
Learn how insulation R-values affect NYC energy-code compliance, construction costs, thermal performance...
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Energy Efficiency LED Retrofits: What ROI Should Building Owners Expect?
Learn how to calculate LED retrofit ROI for commercial buildings, including energy savings, maintenance costs, incentives, payback, and NYC...
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Energy Efficiency Understanding kBtu and Why It's the Standard Energy Metric
Understand the kBtu metric, how energy use intensity (EUI) is calculated, and why it matters for...
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Energy Efficiency Retro-Commissioning vs Retrofitting: What's the Difference?
Learn the fundamental differences between RCx optimization and capital retrofits...
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Energy Efficiency What Is Building Commissioning and Why Does It Matter for...
Building commissioning is a quality assurance process that verifies a building's systems are...
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Energy Efficiency The Role of Energy Modeling in Achieving Maximum...
Energy modeling is an important tool for analyzing and optimizing building energy consumption...
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Energy Efficiency How Energy Efficiency Aligns with ESG Goals...
Climate change is something highly concerning. NASA data suggests that CO2 is at its highest in two million years...
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Energy Efficiency 5 Bold Predictions for New York Real Estate in 2025: What to Watch...
As we step into 2025, New York real estate remains a dynamic and evolving market...
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Energy Efficiency 5 Easy Ways to Improve Energy Efficiency in Your Building...
Building operations account for 30% of global energy consumption and 26% of...