Dec 2, 2009 #1 J john Active member Joined Sep 3, 2007 Messages 3,725 Reaction score 0 Points 36 Age 65 I have a 900 sq.st. home in the cold midwest. All the duct work and piping are in the crawl. Their is only 1 vent. This the outside air vent in the foundation of the house. Their is only 1 vent. like this.
I have a 900 sq.st. home in the cold midwest. All the duct work and piping are in the crawl. Their is only 1 vent. This the outside air vent in the foundation of the house. Their is only 1 vent. like this.