There are a few warning signs you should have house ventilation, such as:
1. Stubborn odors
If you have problems getting intense odors out of your space, you could have a ventilation concern.
2. Musty air
The air in your home should be fresh, but stuffy areas mean you may have inferior ventilation.
3. Disproportionate dust
Dust can develop more frequently in homes with inadequate air movement.