Replacement Windows in District of Columbia

Rebates & incentives

The federal window tax credit (25C) ended for projects placed in service after December 31, 2025. If your windows were installed in 2025, you can still claim it on your 2025 return — but for new projects there is no federal window credit. State and utility programs are now the main source of window incentives.

DC's Department of Energy and Environment (DOEE) has launched its roughly $59 million in IRA HOMES/HEAR funding, largely channeled through the DC Sustainable Energy Utility to expand income-qualified electrification and affordable-housing retrofit programs rather than broad market-rate window rebates.

• DC Sustainable Energy Utility (DCSEU) residential programs. The DCSEU runs the District's flagship efficiency programs, with substantial rebates focused on electrification and HVAC equipment; windows are generally not a standalone rebate, but envelope work can be captured in income-qualified and whole-building projects. (DCSEU residential rebates (dcseu.com))
• DCSEU income-qualified and affordable housing programs. The Affordable Home Electrification Program and the Affordable Housing Retrofit Accelerator deliver no-cost comprehensive upgrades — including envelope measures — to income-qualified households and affordable multifamily buildings; demand is high and waitlists have applied. (DCSEU AHEP and IQEF program pages; DOEE Healthy Homes implementation)

Energy code

The District enforces its own DC Energy Conservation Code — a heavily amended, stricter-than-baseline code (the current 2017 edition builds on the 2015 IECC) — so permitted window replacements must meet demanding U-factor and efficiency requirements.

Local market research in District of Columbia

• Replacement windows in Washington, DC covers costs, codes, rebates, and local FAQs.