The Most Tightly Kept Secret in Insulation

Most new homes are leaky. In the typical new home, significant volumes of air enter through cracks near the basement rim joists and exit through ceiling holes on the building’s top floor. These air leaks waste tremendous amount of energy.

In recent years, after years of prodding by building scientists, code officials have finally taken a few stabs at addressing air leakage. (For more information on recent code changes related to building airtightness, see New Air Sealing Requirements in the 2009 International Residential Code and An Overview of the 2012 Energy Code.)

Of course, some builders have focused on energy efficiency for years, and many of these builders own a blower door. If you have your own blower door, you have probably learned by trial and error which cracks matter most.

A Bright Idea, LED

LED is a highly energy efficient lighting technology, and has the potential to fundamentally change the future of lighting in the United States.  Residential LEDs -- especially ENERGY STAR rated products -- use at least 75% less energy, and last 25 times longer, than incandescent lighting.

Widespread use of LED lighting has the greatest potential impact on energy savings in the United States. By 2027, widespread use of LEDs could save about 348 TWh (compared to no LED use) of electricity: This is the equivalent annual electrical output of 44 large electric power plants (1000 megawatts each), and a total savings of more than $30 billion at today's electricity prices.

Improve your HVAC system up to 30%

When the home's duct system isn't properly sealed, carbon monoxide and other toxic fumes that are byproducts of natural gas appliances can build up in the home and create an unhealthy and potentially lethal living environment. Another problem occurs when noxious fumes from common household items, such as cleaners, solvents, fertilizers and paints, are drawn into the home's return system through poorly sealed joints. Once these smelly and potentially dangerous fumes are drawn into the duct system, they can be circulated and recirculated through the home.