Tag: mechanical ventilation
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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…
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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…
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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…
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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…
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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…