HVAC fresh air intake
Hi, I have a 1950s ranch house with full basement partially finished in Chicago suburbs. The home has been extensively sealed air tight over the past decade and has created a negative pressure situation inside the house. I’ve been keeping a basement window cracked open to allow for some fresh air but in winter it spills a lot of cold air into our basement we use as a family room.
I’m planning to add a 4″ PVC duct outside and straight into my HVAC return duct so I can keep the window closed and pull in some fresh air.
My question is about being overly cautious. The best place to put the intake snorkel outside the house is only 8 feet away from my Radon exhaust. Am I gonna suck radon into my house?
BTW, the window I currently leaved cracked is only 10 feet away from the radon exhaust too.
Pic attached, red pipe proposed location of fresh air intake.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part