![]() ![]() So trimming window area becomes a balancing act between the energy efficiency gains from reducing window area and the many additional benefits windows provide. Windows also provide natural ventilation and emergency egress from bedrooms. And, there is a limit to how far one can take the window elimination approach. Reducing the window area of a home is an excellent way to reduce heat loss and save money, but it isn’t a big hit with building designers who emphasize natural light, outdoor views, passive solar heat gain, and the architectural aesthetics of windows. How can these holes in zero energy envelopes be closed cost effectively? Reducing Window Area While Improving Lighting, Ventilation, and Views ![]() The performance gap becomes ridiculously wide in zero energy homes, where great attention is paid to building insulation, and the wall can be anywhere from R25 to as high as R60. The typical new double-pane window has an insulating value between R2.5 and R3. Wall insulation is required to be no less than R19 by most building codes. They are responsible for up to 48% of the heat loss from a typical home, but comprise only 7% of the envelope area. The first time you look at an energy modeling report, one thing jumps out: Windows are big holes in the energy envelope. Zero Energy Homes of the Future are Available Today.Add your Free Zero Energy Home Listing to Realty Sage.Net Zero Home Sales & Appraiser Courses Online.Certifying Zero Energy Home Performance.Builder Subsidies, Incentives, & Tax Credits.Zero Energy Home Building & Design Course Calendar.Twelve Steps to Affordable Zero Energy Home Construction & Design.Zero Homes are Comparable in Cost to Standard Homes.Financing Renewable Energy & Energy Efficiency Upgrades for Existing Homes.Remodeling on the Path to Zero for Homeowners.Zero Energy Home Professionals Near You.Appraisal & Mortgage Strategies for Zero Homes.20 Advantages of Living in a Zero Energy Home. ![]()
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