There are a a variety of warning signs you should have house ventilation, such as:
1. Lingering odors
If you have trouble getting powerful odors out of your house, you might have a ventilation concern.
2. Stale air
The air in your home should feel fresh, but musty areas mean you might have poor ventilation.
3. Disproportionate dust
Dust can get stuck more frequently in areas with stifled airflow.