Unit is set to exhaust for 65 secondsand intake for 65 seconds, working well so far and air seems fresher! Will report on any radon lowering effects after a few more days of use. It’s been running for a week cycling air in/out cycle Radon levels went from 2.3 to 1.4 in a 1500 sq/ft basement, very pleased!
This is a great new fan. After installation, my home is very comfortable to use. Thank you Vtronic very much.