There are some concerns about building a house too tight, creating mold issues and unhealthy air, but you also need balanced ventilation and balanced supply and exhaust. That balance is a major component of building science. Exchanging air in the home actually makes a house healthier.  -   Brian Hall     Quotes
There are some concerns about building a house too tight, creating mold issues and unhealthy air, but you also need balanced ventilation and balanced supply and exhaust. That balance is a major component of building science. Exchanging air in the home actually makes a house healthier. Brian Hall