There are a few warning signs you should look into house ventilation, including:
1. Lingering odors
If you have issues getting intense smells out of your home, you could have a ventilation issue.
2. Stuffy air
The air in your house should feel fresh, but musty sectors mean you may have issues with ventilation.
3. Disproportionate dust
Dust can develop more quickly in homes with poor airflow.