Yeah, I mean I have 1200 gallons in the basement currently and it has been running for a little over 2 years, grant it they are tanks, but all tanks are open tops, and sumps are horse troughs. So far humidity never spikes over 55-65% they are powered constant and turn on automatically. Prior to getting high powered outside exhausting dehumidifiers with water draining to sump pumps, during the summer it would be thick in the air. But the nice thing is they are air conditioners as well so my basement stays cool and dry etc.