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Window Energy Efficiency for Public and Affordable Housing

Energy-efficient windows save heating and cooling energy, improve occupant comfort, reduce condensation and may allow for smaller, less expensive heating and cooling equipment. Although initial cost is often a barrier for window energy efficiency measures in low-income housing, there may be opportunities to reduce initial cost, take advantage of financing and incentive programs, and maximize the benefits of the investment.

This web page is intended to help you find accessible resources on affordable window energy efficiency for existing homes as well as new construction. Since we are looking to further expand and refine these resources, we welcome your feedback to ewc@ase.org (see full contact info).

Summary Fact Sheets

Window Selection Resources

EWC Window Selection Tool
This online tool allows you to:

  • Compare how various window or skylight types affect estimated energy cost for a typical house in your location;
  • Find manufacturers who offer windows and skylights within the categories shown;
  • Learn more about manufacturers' specific product options.

EWC Guidance: Selecting Energy Efficient Replacement Windows
Guidance on window replacement options, energy ratings, window durability, installation, etc.

Minnesota Sustainable Housing Initiative
The Minnesota Sustainable Housing Initiative website is a portal for information and research being conducted by the Center for Sustainable Building Research to inform and support the creation of affordable, healthy, durable, and resource and energy efficient homes throughout Minnesota and the Midwest.

Window Durability
Basic overview of durability considerations, including frame, sash and insulated glass.

Window Upgrades and Rehabilitation

EWC Guidance: Improving Existing Windows
Simple guidance on upgrades to existing windows including caulking and weatherstripping, storm windows, window film and exterior shading.

The Rehab Guide: Windows and Doors by HUD
This comprehensive guide covers window and door rehabilitation, including hardware, caulking, weatherstripping, shutters and awnings, and more. This publication is from 1999, but while codes, standards and advanced window technologies may have changed, much of this rehabilitation guidance still holds true.

Fact Sheet: Lead Paint and Window Replacement: Challenges and Opportunities [pdf]

Incentive and Purchasing Programs

Utility and State Incentives
Directory of incentive and loan programs related to window energy efficiency

DOE High Performance and Low-E Storm Windows Volume Purchase Program
This program connects potential buyers with vendors of highly insulating windows and low-E storm windows by allowing buyers to check out available product options and price ranges at www.windowsvolumepurchase.org.