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More stories about Energy

  • More Than 'Tips' Needed to Improve Energy Efficiency

    A thorough, step-by-step analysis that treats the home as an integrated system is the only route to true performance improvements, including lower energy bills and better indoor air quality.

  • Why 'Energy-Saving' Tips Suck

    The truth is that commonly espoused energy-saving tips are worthless. We look at four common offenders.

  • Studying Moisture in Fat Walls

    Comparing the performance of a cellulose-insulated double wall against the same wall insulated with two different thicknesses of low-density open-cell spray foam.

  • Heat Pumps for Cold Climates

    Mini-split heat pumps were a major topic at the Northeast Sustainable Energy Association (NESEA) BuildingEnergy 14 conference in Boston this year. Ted Cushman explains why and how these mini-splits shine in cold climates.

  • Making the Case for Zero-Leak Ducts

    Mike MacFarland outlines the benefits of leak-free ducts.

  • To Improve the Energy Performance of Walls, Look at Total R-Value

    Today’s builders are learning to mitigate thermal bridging by using alternative framing techniques, continuous exterior rigid foam products, or both.

  • Retrofit Exterior Foundation Insulation

    Is there a minimally invasive, cost-competitive, easily deployable method of upgrading soil-side foundation insulation in existing buildings? Read on.

  • Buried and Encapsulated Ducts

    Encapsulating ducts with at least 1 1/2 inches of closed-cell spray foam substantially improves HVAC performance in all U.S. climate zones. Burying the encapsulated ducts in loose-fill attic insulation improves performance even more.

  • Venting the Crawlspace

    Most crawlspaces are vented to the outdoors, but encapsulating the crawlspace has gained favor among builders of green and energy-efficient homes. But what do you do about the air down there?

  • Top 10 Building Science Secrets

    Overall, the state of the construction industry is improving. Many builders and remodelers are learning, either out of interest or coercion, about building science and how to apply it. Here are 10 secrets that will keep you ahead of the game.