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Beware of New Problems
As you seal your house, remember that a house is a system, and a making changes to that system can cause repercussions - in this case, altering the air flows in the house. A typical house built before the early 1970`s has so many air leaks that it`s difficult to make it truly airtight, even with an ambitious sealing job. However, if your house is already fairly tight, it`s possible to cause air quality problems by filling all the cracks. Common signs of
a house that`s become too airtight include :
The solution is
to add some controlled ventilation using exhaust fans or fresh air intakes at
strategic spots in the house. Even with the new ventilation, which all people
and houses need to stay healthy, your energy consumption will be lower. (Chapter
One has a full discussion of the house as system. See Chapter Two for more on
air quality issues and Chapter Four for a discussion of ventilation systems.) |
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