Ventilating a Home in Cold Weather

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You need fresh air, but bringing in cold outdoor air can cause problems

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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 I was. I happened to have woken up on a mountaintop in North Carolina, where the temperature was a much warmer -3°F.

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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 I was. I happened to have woken up on a mountaintop in North Carolina, where the temperature was a much warmer -3°F.

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The Difficulty of Updating Georgia’s Energy Code

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Trying to get airtightness below 7 ach50 has been a struggle

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Seven years ago, Georgia led the nation. Yep. We were the first state to adopt an energy code that made blower door testing mandatory. All new homes built in the state had to show through performance testing that they had an air leakage rate of less than 7 air changes per hour at 50 Pascals of pressure difference (ach50).

read more

The Difficulty of Updating Georgia’s Energy Code

Prime: 
prime

Subtitle: 
Trying to get airtightness below 7 ach50 has been a struggle

Images: 

Seven years ago, Georgia led the nation. Yep. We were the first state to adopt an energy code that made blower door testing mandatory. All new homes built in the state had to show through performance testing that they had an air leakage rate of less than 7 air changes per hour at 50 Pascals of pressure difference (ach50).

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Five Ways to Do Balanced Ventilation

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Including some you can use to convert an exhaust-only system

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Ventilation is a great thing. Bringing outdoor air into the home and exhausting stale indoor air improves indoor air quality. Well, most of the time, anyway. Sometimes the outdoor air quality is worse than indoor air. Sometimes you bring in too much humidity and start growing mold. And sometimes you bring in the wrong outdoor air. But the issue of outdoor air vs. indoor air is a topic for another article.

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