Starting July 1, 2026, the Model Low Energy and Carbon Code (MLECC) significantly tightens window performance standards for residential projects across most Colorado jurisdictions. These updates focus on specific efficiency metrics to reduce carbon emissions and heat transfer.
Key requirements and jurisdictional differences include:
- Denver, Centennial, and Unincorporated Arapahoe County: These areas have the most stringent requirements. Windows must achieve a U-value of 0.30 or lower and a Solar Heat Gain Coefficient (SHGC) of 0.25 or lower.
- Colorado Springs: This jurisdiction has delayed full adoption until 2027 and maintains slightly more flexible thresholds, requiring a U-value of 0.35 and an SHGC of 0.30.
- Energy Star Alignment: The new thresholds are designed to align with the Energy Star window requirements 2026 Colorado standards. Selecting high-performance products, such as fiberglass windows, helps meet these benchmarks.
- Tax Credit Eligibility: Homeowners who install windows meeting these heightened standards may become eligible for the Energy Star Most Efficient 2026 tax credit, helping to offset the cost of high-performance upgrades.
Related FAQs
-
How do I Repair a Foundation on a Historic Home without Losing its Value?
Read More »: How do I Repair a Foundation on a Historic Home without Losing its Value?To repair a foundation on a historic home without compromising its value, we utilize specialized, minimally invasive techniques that prioritize material integrity and reversibility. Maintaining value requires balancing modern engineering with traditional preservation principles. Our approach focuses on several key…
-
What are the Code Requirements for Historic Foundation Repairs?
Read More »: What are the Code Requirements for Historic Foundation Repairs?Restoring a historic foundation involves navigating a specialized set of regulations that balance modern structural safety with the preservation of your home’s original character. In Centennial and the wider Denver metro area, these projects must adhere to both current building…
-
How do I Handle Stone Foundation Mortar Deterioration in Old Buildings?
Read More »: How do I Handle Stone Foundation Mortar Deterioration in Old Buildings?To handle mortar deterioration in stone foundations, we follow a specialized process known as repointing, which is a critical component of historic foundation restoration. Because old stone foundations must be allowed to “breathe,” the repair method and materials used are…
-
What Questions should I Ask a Window Contractor before Hiring?
Read More »: What Questions should I Ask a Window Contractor before Hiring?To protect your investment and ensure a high-quality result, you should vet a window contractor thoroughly before signing any contract. Key questions to ask include: Related FAQs
-
How Long does a Full House Window Replacement Typically Take?
Read More »: How Long does a Full House Window Replacement Typically Take?The timeline for a full house window replacement involves several stages, with the actual installation typically occurring over several days depending on the size of the home. Project Stage Timelines Factors Influencing the Schedule While these are standard estimates, actual…
