Do you have a fireplace or wood stove in your home? Do you ever have an odor related to these every once in a while?
Well there are simple explanations for this. In the winter time, your home is warmer than the exterior temperatures. So the air in your chimney flues wants to go up because it is lighter than the air outside. However, in the summer, this condition is more neutral or even reversed.
If your air conditioner is on, the temperature in your flue can be colder than the air outside. So the air naturally wants to fall in the flue because it is heavier. Now turn on any appliance in your home such as a bathroom fan, kitchen exhaust fan, or even older furnaces or water heaters and you can have a problem.
The illustration with this post shows you how big fans like downdraft ranges can actually force the air back out of the chimney. Now couple that with a wet flue if a hood isn’t protecting it and you have a musty soot odor in your home.
For more information like this you can follow this link or contact us to review your project. ~ John
https://www.northtwinbuilders.com/new-home-construction-consulting-by-north-twin-builders