Canopy Ventilation

[lastlight]

Oh I got it. dehumidistat not dehumidifier. So I did understand!

How are you allowing makeup air to enter the house Des? I'm concerned about that negative pressure and the furnace etc. I was going to run another 4" duct from the same window that is essentially just an open pipe leading into the fish room.

Also where should inlet air and outlet be positioned? I think humid air sinks so shouldn't the new air vent be up top and the outlet on the bathroom fan be near the floor?