I live in an exceptionally dry area - I'm taking the humidity from too-low-to-register-on-the-hygrometer to 30%RH - so there's no material mold risk either arou

I live in an exceptionally dry area - I'm taking the humidity from too-low-to-register-on-the-hygrometer to 30%RH - so there's no material mold risk either around the windows or in the HVAC ducting.