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Product Review: Windows

8 sustainable glazing products

Product Review: Windows

8 sustainable glazing products

  • Hurd. An online glossary and comparative chart of various insulating glass options supplements printed materials that illustrate and explain the best use of each option for residential projects. The company also offers continuing education courses through www.aecdaily.comen2 and in person via its Architectural Services Group. Pictured Fixed windows with ComfortGlaze glass and dividedlight grilles. 800.223.4873. www.hurd.com.

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    Hurd. An online glossary and comparative chart of various insulating glass options supplements printed materials that illustrate and explain the best use of each option for residential projects. The company also offers continuing education courses through www.aecdaily.comen2 and in person via its Architectural Services Group. Pictured Fixed windows with ComfortGlaze glass and dividedlight grilles. 800.223.4873. www.hurd.com.

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    Hurd. An online glossary and comparative chart of various insulating glass options supplements printed materials that illustrate and explain the best use of each option for residential projects. The company also offers continuing education courses through www.aecdaily.com/en/2 and in person via its Architectural Services Group. Pictured: Fixed windows with ComfortGlaze glass and divided-light grilles. 800.223.4873. www.hurd.com.

  • Pella. The companys Web site provides information about basic performance options and benefits the best use of its Insulshield windows energy tax credits and a complete list of products that qualify for those credits. Its Architectural Services Division also offers consultations and tools to select products. Pictured Architect and Designer series casement and fixed units. 800.374.4758. www.pella.com.

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    Pella. The companys Web site provides information about basic performance options and benefits the best use of its Insulshield windows energy tax credits and a complete list of products that qualify for those credits. Its Architectural Services Division also offers consultations and tools to select products. Pictured Architect and Designer series casement and fixed units. 800.374.4758. www.pella.com.

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    Pella. The companys Web site provides information about basic performance options and benefits the best use of its Insulshield windows energy tax credits and a complete list of products that qualify for those credits. Its Architectural Services Division also offers consultations and tools to select products. Pictured: Architect and Designer series casement and fixed units. 800.374.4758. www.pella.com.

  • Simonton. Online tools include PDFs of the companys Energy Starqualified glass options across all product lines by climate zone and of those that qualify for federal tax credits. The site features a description of the components employed to achieve efficient windows and a downloadable consumer brochure about Energy Stars window certification program. Pictured ProFinish Brickmould 600 series. 800.746.6686. www.simonton.com.

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    Simonton. Online tools include PDFs of the companys Energy Starqualified glass options across all product lines by climate zone and of those that qualify for federal tax credits. The site features a description of the components employed to achieve efficient windows and a downloadable consumer brochure about Energy Stars window certification program. Pictured ProFinish Brickmould 600 series. 800.746.6686. www.simonton.com.

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    Simonton. Online tools include PDFs of the company's Energy Starqualified glass options across all product lines by climate zone and of those that qualify for federal tax credits. The site features a description of the components employed to achieve efficient windows and a downloadable consumer brochure about Energy Star's window certification program. Pictured: ProFinish Brickmould 600 series. 800.746.6686. www.simonton.com.

  • AMSCO. The company provides performance data for all of its window products online and offers a section to help educate consumers about highperformance windows including a glossary of window terminology. Demonstration kits for its dealer network show the difference between clear glass and the manufacturers CozE highperformance glass. Pictured Renaissance series composite windows. 888.822.6726. www.amscowindows.com.

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    AMSCO. The company provides performance data for all of its window products online and offers a section to help educate consumers about highperformance windows including a glossary of window terminology. Demonstration kits for its dealer network show the difference between clear glass and the manufacturers CozE highperformance glass. Pictured Renaissance series composite windows. 888.822.6726. www.amscowindows.com.

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    Krause Johansen

    AMSCO. The company provides performance data for all of its window products online and offers a section to help educate consumers about high-performance windows including a glossary of window terminology. Demonstration kits for its dealer network show the difference between clear glass and the manufacturer's CozE high-performance glass. Pictured: Renaissance series composite windows. 888.822.6726. www.amscowindows.com.

  • Owens Corning. The company eschews a onesizefitsall approach with online tools and glazing options within its new Innovision series to match window performance values to each elevationexposure and optimize energy efficiency and comfort. Also available is a downloadable Manufacturers Certification Document to supplement purchase receipts to help claim energy tax credits. Pictured Innovision fiberglass windows. 800.438.7465. www.owenscorning.com.

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    Owens Corning. The company eschews a onesizefitsall approach with online tools and glazing options within its new Innovision series to match window performance values to each elevationexposure and optimize energy efficiency and comfort. Also available is a downloadable Manufacturers Certification Document to supplement purchase receipts to help claim energy tax credits. Pictured Innovision fiberglass windows. 800.438.7465. www.owenscorning.com.

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    Owens Corning. The company eschews a "one-size-fits-all" approach with online tools and glazing options within its new Innovision series to match window performance values to each elevation/exposure and optimize energy efficiency and comfort. Also available is a downloadable Manufacturer's Certification Document to supplement purchase receipts to help claim energy tax credits. Pictured: Innovision fiberglass windows. 800.438.7465. www.owenscorning.com.

  • JeldWen. The company a 2010 Energy Star Partner of the Year offers an energy resource section on its Web site with information on the energy tax credits a tutorial on glass performance guidelines on Energy Star zone requirements and a list of qualified models. The site also lists thermal performance ratings for all of its window products. Pictured Custom wood window with metal cladding. 800.535.3936. www.jeldwen.com.

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    JeldWen. The company a 2010 Energy Star Partner of the Year offers an energy resource section on its Web site with information on the energy tax credits a tutorial on glass performance guidelines on Energy Star zone requirements and a list of qualified models. The site also lists thermal performance ratings for all of its window products. Pictured Custom wood window with metal cladding. 800.535.3936. www.jeldwen.com.

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    Jeld-Wen. The company a 2010 Energy Star Partner of the Year, offers an energy resource section on its Web site with information on the energy tax credits, a tutorial on glass performance, guidelines on Energy Star zone requirements, and a list of qualified models. The site also lists thermal performance ratings for all of its window products. Pictured: Custom wood window with metal cladding. 800.535.3936. www.jeld-wen.com.

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    Mr. Janis Miglavs

    Milgard. Designed to take the guesswork out of optimizing window efficiency and matching units to the home’s climate, 3D/3D Max Energy Packages address energy efficiency through the three dimensions of a window: frame, product design, and glazing unit. Package components include technologies with low-E glass, argon gas fills, and proprietary foam spacers. Pictured: Fiberglass Ultra series. 800.645.4273. http://www.milgard.com/.

  • Andersen. The EcoExcel energy performance package includes all windows that qualify for the federal energy tax credit and an online service to verify compliance with the tax credit and save the manufacturers certification statement. Andersen also sponsors Windows in Sustainable Design Design Principles and Federal Tax Incentives an AIAapproved continuing education course at www.architectces.com. Pictured 400 Series Woodwright doublehung windows with LowE4 glass. 800.426.4261. www.andersenwindows.com.

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    Andersen. The EcoExcel energy performance package includes all windows that qualify for the federal energy tax credit and an online service to verify compliance with the tax credit and save the manufacturers certification statement. Andersen also sponsors Windows in Sustainable Design Design Principles and Federal Tax Incentives an AIAapproved continuing education course at www.architectces.com. Pictured 400 Series Woodwright doublehung windows with LowE4 glass. 800.426.4261. www.andersenwindows.com.

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    Krause Johansen

    Andersen. The EcoExcel energy performance package includes all windows that qualify for the federal energy tax credit and an online service to verify compliance with the tax credit and save the manufacturer's certification statement. Andersen also sponsors "Windows in Sustainable Design: Design Principles and Federal Tax Incentives," an AIA-approved continuing education course at www.architectces.com.  Pictured: 400 Series Woodwright double-hung windows with Low-E4 glass. 800.426.4261. www.andersenwindows.com.

  • Ply Gem. Online features primarily for consumers include a window search tool and a viewabledownloadable brochure about glass technology all windows qualify for tax credits. A software program for dealers includes the ability to simulate or confirm performance values and options. A special kit helps pros explain the tax credit to customers and includes a leavebehind to assist homeowners with claim paperwork. Pictured Mira Premium series. 800.999.8400. www.plygemwindows.com.

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    Ply Gem. Online features primarily for consumers include a window search tool and a viewabledownloadable brochure about glass technology all windows qualify for tax credits. A software program for dealers includes the ability to simulate or confirm performance values and options. A special kit helps pros explain the tax credit to customers and includes a leavebehind to assist homeowners with claim paperwork. Pictured Mira Premium series. 800.999.8400. www.plygemwindows.com.

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    Ply Gem. Online features, primarily for consumers, include a window search tool and a viewable/downloadable brochure about glass technology; windows can be configured to qualify for tax credits. A software program for dealers includes the ability to simulate or confirm performance values and options. A special kit helps pros explain the tax credit to customers and includes a leave-behind to assist homeowners with claim paperwork. Pictured: Mira Premium series. 800.999.8400. http://www.plygemwindows.com/.

  • Marvin. The Performance Education Handbook available online and in print includes design pressure DP ratings Energy Star ratings glass performance and NFRC certification and labeling for the companys entire product line among other performance topics. The site also lists products that qualify for energy tax credits. Pictured Aluminumclad wood windows. 800.346.3363. www.marvin.com.

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    Marvin. The Performance Education Handbook available online and in print includes design pressure DP ratings Energy Star ratings glass performance and NFRC certification and labeling for the companys entire product line among other performance topics. The site also lists products that qualify for energy tax credits. Pictured Aluminumclad wood windows. 800.346.3363. www.marvin.com.

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    Marvin. “The Performance Education Handbook,” available online and in print, includes design pressure (DP) ratings, Energy Star ratings, glass performance, and NFRC certification and labeling for the company’s entire product line, among other performance topics. The site also lists products that qualify for energy tax credits. Pictured: Aluminum-clad wood windows. 800.346.3363. http://www.marvin.com/.

AN INTEGRATED APPROACH

The breakfast room scenario, and even more dramatic examples of homes that use windows of varying U-factor and SHGC values to take advantage of passive solar heating, cut down on heat gain from a western elevation, or save costs on a northern exposure, underscores the merits of a building science (or integrated) approach to energy efficiency and thermal comfort.

“In reality, everything is related [to thermal performance and comfort],” says Saxler. “You need a total home evaluation if you want to fine-tune your windows.” An energy audit by a local rater certified by the Residential Energy Services Network (www.natresnet.org) is a good place to start, while most window manufacturers and/or their dealers employ software programs to determine ideal specifications based on other, whole-house factors, such as wall insulation values.

Gaiser is even more blunt about the role of windows in lowering a home’s energy demand. “If you want to save energy, put in fewer windows,” he says. Upgraded insulation costs far less than high-performance windows, he says, and results in a better thermal envelope and a faster return on investment. “Windows rarely pay back as well as other energy-efficiency measures. Put them in for light and views, but not for energy efficiency.”

Which takes us back to the original question of whether specifying window performance for each orientation is worth the effort, at least in terms of thermal value. For builders, the decision may come down to marketability. “It’s an opportunity to stay one step ahead of the competition, to offer a house that’s more comfortable and efficient than the next guy,” says Saxler. “If you do the building science, you’re in the top 10% of all builders.”