Not a whole lot, even so the air staying sucked out is not replaced with only outside air, but also the conditioned air from In the household. Originates from air leaking in the attic with the supporters, ceiling vents, lights, etc. It won't Regulate the actual level of h2o made https://solarcompany92356.frewwebs.com/35441778/a-secret-weapon-for-solar-company