Tag: mechanical ventilation

  • Ventilating a Home in Cold Weather

    Prime:  prime Subtitle:  You need fresh air, but bringing in cold outdoor air can cause problems Images:  When I woke up Saturday morning, the temperature outdoors was -40 degrees†. The wind chill was -100 degrees! It was just unbelievably, impossibly, inhumanly cold outside. Fortunately, that was on a mountaintop in New Hampshire and not where…

  • Ventilating a Home in Cold Weather

    Prime:  prime Subtitle:  You need fresh air, but bringing in cold outdoor air can cause problems Images:  When I woke up Saturday morning, the temperature outdoors was -40 degrees†. The wind chill was -100 degrees! It was just unbelievably, impossibly, inhumanly cold outside. Fortunately, that was on a mountaintop in New Hampshire and not where…

  • Spray Foam Insulated Homes Need Ventilation

    Subtitle:  Contractors who don’t ensure adequate ventilation put themselves — and their customers — at risk Images:  Most installations of spray foam insulation, when properly installed, act as an air barrierBuilding assembly components that work as a system to restrict air flow through the building envelope. Air barriers may or may not act as a…

  • An Interview with Dr. Iain Walker on Ventilation

    Subtitle:  Another installment in the great debate about residential ventilation and indoor air quality Images:  The debate over how much to ventilate a home has been going on a long time. Last year, Building Science Corporation introduced its own standard to compete against ASHRAE 62.2A standard for residential mechanical ventilation systems established by the American…

  • Ventilation Requirements for Weatherized Homes

    Subtitle:  Is the ASHRAE 62.2 ventilation standard too complex and expensive? Images:  I went to school with Cajuns in south Louisiana, and fights were a big deal. They happened frequently, and when they did, a small crowd would gather. The noise would grow quickly and soon everyone in the schoolyard would run over to where…