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The Energy-Efficient Home

Examples of where to insulate. 1. In unfinished attic spaces, insulate between and over the floor joists to seal off living spaces below. If the air distribution is in the attic space, then consider insulating the rafters to move the distribution into the conditioned space. (1A) attic access door 2. In finished attic rooms with or without dormer, insulate (2A) between the studs of "knee" walls, (2B) between the studs and rafters of exterior walls and roof, (2C) and ceilings with cold spaces above. (2D) Extend insulation into joist space to reduce air flows. 3. All exterior walls, including (3A) walls between living spaces and unheated garages, shed roofs, or storage areas; (3B) foundation walls above ground level; (3C) foundation walls in heated basements, full wall either interior or exterior. 4. Floors above cold spaces, such as vented crawl spaces and unheated garages. Also insulate (4A) any portion of the floor in a room that is cantilevered beyond the exterior wall below; (4B) slab floors built directly on the ground; (4C) as an alternative to floor insulation, foundation walls of unvented crawl spaces. (4D) Extend insulation into joist space to reduce air flows. 5. Band joists. 6. Replacement or storm windows and caulk and seal around all windows and doors. Source: Oak Ridge National Laboratory
Home Weatherization
Where to Insulate in a Home
Planning carefully for insulation results in reduced utility bills and superior comfort during the life of the home. In this house, raised heel trusses accommodate R-60 insulation. | Credit: Paul Norton, NREL.
Construction
Insulation for New Home Construction
This colorful water-conserving landscape requires only one-quarter the water a bluegrass lawn would use. | Photo courtesy of Jim Knopf.
Landscaping
Landscaping Water Conservation

Saving Electricity

Buying & Making Electricity
Small Wind Electric Systems
When connecting a home energy system to the electric grid, research and consider equipment required as well as your power provider’s requirements and agreements. | Photo courtesy of Solar Design Associates, Inc.
Buying & Making Electricity
Grid-Connected Renewable Energy Systems
Small wind electric systems require planning to determine if there is enough wind, the location is appropriate, if wind systems are allowed, and if the system will be economical. | Photo courtesy of Bergey WindPower.
Buying & Making Electricity
Planning a Small Wind Electric System

Saving on Heating and Cooling

Evaporative Coolers, sometimes called swamp coolers, is another way to cool air in warm climates with low humidity. | Photo courtesy of <a href="http://www.flickr.com/people/free-stock/">Public Domain Photos</a>.
Heating & Cooling
Evaporative Coolers
Proper ventilation helps you save energy and money. | Photo courtesy of <a href="http://www.flickr.com/photos/jdhancock/3802136698/">JD Hancock</a>.
Heating & Cooling
Ventilation Systems for Cooling
Central air conditioners circulate cool air through a system of supply and return ducts. | Photo courtesy of ©iStockphoto/DonNichols.
Heating & Cooling
Central Air Conditioning
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