It has to do with installation of a radon system for the sole purposes of removing all moisture & odors as it reverses the chimney effect of a house. Run a dehumidifier long enough & it’ll cost more than this system.
I have no clue what radon has to do with it.
Anyhow, no on the dehumidifier. You will have some wet after you first setup but it’ll dry. The moisture around the windows and doors is condensation caused by cold meeting warm.
Better windows or maybe better sealed. Same with the door.