Not very large. Truth be told i can't remember the size. I'll need to check, it at work... i need to empty it once in the morning and once at night.
Yes, i've run into the same windowless basement problem. Hence the dehumidifier.
Question, is the water the dehumidifier collects safe to add back into the tanks? I've wondered this since it is collecting moisture from the air, would it not condense impurities from the air as well?