“Low-E” Windows Maximize Buildings’ Energy Efficiency

Low-E stands for low emissivity, and these windows are constructed to minimize heat transfer through the glass. Since windows are essentially huge holes in the walls of a building, choosing a low-E window design that’s appropriate for local climate and architecture can greatly increase a structure’s thermal efficiency, while reducing energy use and utility costs.

Efficient: Down Filled Sleeping Bags

Down is one of nature’s finest insulators. Nothing matches its warmth for weight, compressibility, and resilience. Its ability to absorb perspiration and cozily drape along the contours of your body is unparalleled by synthetic materials. Down is more expensive than other insulating materials. However, when you divide its cost by the number of cozy nights it provides, down is a …

NovaKool RU7600-DC

Power Consumption: 480 watt hours/day or 240 watt hours /day with insulation (70°F day) Capacity: 7 cu. ft. Dimensions: 18.5" W, 41" H, 28" D Shipping weight: 138 lb. Power: 12 or 24V DC Best Price: $1196 (E-Marine)