Did you know that indoor air can be more than 10 times more polluted than outdoor air? This is bad news if you have allergies, asthma or other respiratory sensitivities. Fortunately, you aren’t helpless in this matter. It’s possible to improve your indoor-air quality by addressing factors in the following three areas: source control, ventilation…

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Modern homes tend to be much more airtight than homes in the past. We find drafts and seal them up, and we install insulated windows and doors to save heating and cooling costs. But this creates a problem: we still need fresh air, and we need to vent stale interior air to the outside. In…

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