Please sign-in or register to save plans. Advanced Plan Search. Top 5 Energy-Efficient Windows. Search House Plans. Advanced Search Options. Efficient Kitchen Workspaces. Energy Efficient Roofing. Related Articles Designing Your Patio. Heat Gain and Loss. Windows, doors, skylights can gain and lose heat through: Direct conduction and convection heat transfer through the glass or multi-layer glazing and framing Thermal radiation into a house and out of a house from room-temperature objects, such as exterior walls and windows, people, equipment, furniture, and interior walls The solar radiation into a house, which is converted to heat when absorbed by building surfaces Air leakage through and around them.
These properties can be measured and rated according to the following energy performance characteristics: U-factor is the rate at which a window, door, or skylight transmits non-solar heat flow. For windows, skylights, and glass doors, a U-factor may refer to just the glass or glazing alone.
NFRC U-factor ratings, however, represent the entire window performance, including frame and spacer material. The lower the U-factor, the more energy-efficient the window, door, or skylight. The lower the SHGC, the less solar heat it transmits and the greater its shading ability.
A product with a high SHGC rating is more effective at collecting solar heat during the winter. A product with a low SHGC rating is more effective at reducing cooling loads during the summer by blocking heat gain from the sun.
For more information about SHGC and windows, see passive solar window design. Replacing old windows and doors with more efficient options is one way to significantly reduce your utility costs.
This advanced glass design features an innovative exterior coating that, when activated by sunlight, reduces water spots by up to 99 percent. It comes standard on Andersen Series products. Depending on the home's location, Low-E4 glass can reduce energy bills by up to 25 percent when compared to ordinary dual-pane glass. Andersen SmartSun glass helps reduce energy consumption in the home while providing year-round thermal protection and attractive visibility.
While standard solar glazing controls heat gain through glass tinting that reduces visible light, SmartSun glass is formulated with an additional microscopic layer of silver that controls the amount of infrared energy transmitted, allows a higher level of visible light, and blocks 95 percent of ultraviolet rays that can damage furniture , carpets, and wallcoverings.
AuraLast wood delivers a number of environmentally friendly benefits such as reduced toxins, longer-lasting products, and raw materials sourced within close proximity of its manufacturing plants. These windows also feature low-E glass, helping homes stay warmer in the winter and cooler in the summer. These replacement windows from JELD-WEN are designed for installation into existing window frames, regardless of the brand of the original window. Because the replacement windows fit into existing openings, the process is simpler, quicker, and less damaging to a home's structure.
The windows come standard with low-E glass, which decreases energy costs. Ultrex, a highly advanced fiberglass composite, enables Integrity Windows and Doors to deliver superior strength, Energy Star-rated thermal protection, minimal expansion or contraction during extreme heat or cold, moisture and chemical resistance, and a paintable exterior that retains color and luster over time.
Infinity Replacement Windows, another Marvin company, now offers EverWood, a new interior wood-grain finish that looks, feels, paints, and stains like wood, yet is completely low maintenance.
Made from inorganic materials and combined with Ultrex, EverWood will not absorb moisture or decay over time. There is no warping, discoloration, material degradation, expansion, or contraction with EverWood--just extremely reliable performance, efficiency, and lasting beauty. If you want the look of a double-hung window but casement windows are needed for egress purposes--or because you prefer the performance of a casement--consider the Marvin Ultimate Casement.
A simulated check rail and a wide bottom rail mimic the look of a double hung, allowing a home to keep its architectural style and have top-notch performance.
The Ultimate Casement helps improve a home's energy efficiency with low-E II argon-filled insulating glass.
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