Northwest Transmissions Parts

Northwest Transmissions Parts

Cool Your Home Naturally (2)

Walls

Wall color is not as important as roof color, but does affect heat gain somewhat. white exterior walls absorb less heat than dark walls. and light, bright walls increase the longevity of siding, particularly on the east, west, and south sides of the house.

Windows

Roughly 40% of the unwanted heat that builds up in your home comes in through windows. Reflective window coatings are one way to reflect heat away from your home. These coatings are plastic sheets treated with dyes or thin layers of metal. Besides keeping your house cooler, these reflective coatings cut glare and reduce fading of furniture, draperies, and carpeting. Two main types of coatings include sun-control films and combination films. Sun-control films are best for warmer climates because they can reflect as much as 80% of the incoming sunlight. Many of these films are tinted, however, and tend to reduce light transmission as much as they reduce heat, thereby darkening the room. Combination films allow some light into a room but they also let some heat in and prevent interior heat from escaping. These films are best for climates that have both hot and cold seasons. Investigate the different film options carefully to select the film that best meets your needs. Note: do not place reflective coatings on south-facing windows if you want to take advantage of heat gain during the winter. The coatings are applied to the interior surface of the window.

Although you can apply the films yourself, it is a good idea to have a professional install the coatings, particularly if you have several large windows. This will ensure a more durable installation and a more aesthetically pleasing look.

Landscaping is a natural and beautiful way to shade your home and block the sun.

Blocking the Heat

Two excellent methods to block heat are insulation and shading. Insulation helps keep your home comfortable and saves money on mechanical cooling systems such as air conditioners and electric fans. Shading devices block the sun's rays and absorb or reflect the solar heat.

Insulation

Weatherization measures - such as insulating, weather stripping, and caulking - help seal and protect your house against the summer heat in addition to keeping out the winter cold. For more information air conditioning on weatherizing your home, see our weather stripping article The attic is a good place to start insulating because it is a major source of heat gain. Adequately insulating the attic protects the upper floors of a house. Recommended attic insulation levels depend on where you live and the type of heating system you use. for most climates, you want a minimum of R-30. In climates with extremely cold winters, you may want as much as R-49. again, check the DOE fact sheet insulation on how to determine the ideal level of insulation for your climate.

Wall insulation is not as important for cooling as attic insulation because outdoor temperatures are not as hot as attic temperatures. also, floor insulation has little or no effect on cooling.

Although unintentional infiltration of out-side air is not a major contributor to inside temperature, it is still a good idea to keep it out. Outside air can infiltrate your home around poorly sealed doors, windows, electrical outlets, and through openings in foundations and exterior walls. Thorough caulking and weather stripping will control most of these air leaks.

Shading

Shading your home can reduce indoor temperatures by as much as 20 degrees F (11 degrees C).

Landscaping

Landscaping is a natural and beautiful way to shade your home and block the sun. A well-placed tree, bush, or vine can deliver effective shade and add to the aesthetic value of your property. When designing your landscaping, use plants native to your area that survive with minimal care. Trees that lose their leaves in the fall (i.e., deciduous) help cut cooling energy costs the most. when selectively placed around a house, they provide excellent protection from the summer sun and permit winter sunlight to reach and warm your house. The height, growth rate, branch spread, and shape are all factors to consider in choosing a tree.

Vines are a quick way to provide shading and cooling. grown on trellises, vines can shade windows or the whole side of a house. Ask your local nursery which vine is best suited to your climate and needs. Besides providing shade, trees and vines create a cool microclimate that dramatically reduces the temperature (by as much as (9?f []5?c]) in the surrounding area. During photosynthesis, large amounts of water vapor escape through the leaves, cooling the passing air. and the generally dark and coarse leaves absorb solar air conditioning radiation. You might also consider low ground cover such as grass, small plants, and bushes.a grass-covered lawn is usually 10?f (6?c) cooler than bare ground in the summer. If you are in an arid or semiarid climate, consider native ground covers that require little water. For more information on landscaping, see the erec fact sheet landscaping for energy efficiency

Planning Your Planting

Placement of vegetation is important when landscaping your home. The following are suggestions to help you gain the most from vegetation:

• Plant trees on the northeast-southeast and the northwest southwest sides of your house. Unless you live in a climate where it is hot year-round, do not plant trees directly to the south. Even the bare branches of mature deciduous trees can significantly reduce the amount of sun reaching your house in the winter.
• Plant trees and shrubs so they can direct breezes. Do not place a dense line of evergreen trees where they will block the flow of cool air conditioning air around or through them. * Set trellises away from your house to allow air to circulate and keep the vines from attaching to your house's facade and damaging its exterior. Placing vegetation too close to your house can trap heat and make the air around your house even warmer. * Do not plant trees or large bushes where their roots can damage septic tanks, sewer lines, underground wires, or your house's foundation. * Make sure the plants you choose can withstand local weather extremes.

About the Author

Regional dialogues update: as part of the People Power grassroots network, we will be communicating with utilities regularly about this issue and might ... (Northwest Public Power Association) $5.95 This digital document is an article from Bulletin (Northwest Public Power Association), published by Thomson Gale on December 1, 2005. The length of the article is 678 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.Cita...

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