I built my mother a passive cellar a bit over a year ago and have monitored the temp and humidity regularly. The consistency throughout the year is heartening, and the temperature is always right around 54 degrees. Problem is the humidity is too high - 80+ percent. There are some mildewy spots around the cellar that I am not thrilled with. I have tried using a freestanding dehumidifier and a bunch of water comes out, but the temp gets up around 70. Take the machine out, temp drops back to
54, humidity goes back to 80+. I think the concrete floor is still 'curing' which is probably a good part of the problem. Question is - is there a fairly inexpensive way to drop the humidity while not affecting the temp?TIA,
-Dave