Power vents for the attic are not recommended as they generally use more energy than they save. Other super-ventilation techniques may stir up the still air spaces within the attic insulation itself. The best strategy is the use of radiant heat barriers laid directly on top of the insulation with the foil side up. Vapor barriers are not recommended for Florida homes and commercial buildings, particularly on the interior walls. According to Maytag studies, washing in warm water may be more energy efficient than washing in cold water.
Oils emulsify better in warm water than in cold water, allowing less detergent to be used.
Detergent is very energy intensive and tends to pollute the environment with phosphates. The other alternative is to use a longer washing cycle, which is counter productive to energy use as well. The most energy efficient clean clothes are those washed with warm water. Of course, delicate clothes should be washed in cold water. Diapers, towels and most sheets should be washed in hot water for sanitary reasons.