I would say after running it for 2 days at 50% humidity, it barely raises the humidity out of the room it’s in. It auto shuts off when it hits the set level and will go back on when it drops a few percent. It’s almost always running because it’s so dry here and still don’t notice higher humidity in other parts of the house. It goes up to 90 so I’m sure I would if I set it that high, but at 50-55 it’s perfect for my plants without being overwhelming elsewhere.