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The Energy-Efficient Home

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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

Saving Electricity

Use sleep mode and power management features on your computer to save money on your energy bill.
Saving Electricity
Energy Efficient Computer Use
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

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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