Post #3867263

Here's our only air filter in the basement, the pc fan #CRBox. The basement is the same raw square footage as the first floor, and is divided up basically the same way (due to the way prior owners had remodeled the first floor to have an open kitchen, etc). Yes, that is an #AQI of 4. Note that the basement is not particularly air-tight - the windows are leaky and old (we actually have water intrusion through one of them, and ants through another). There's a leaky door.