I’m trying to bring down the humidity in my garage shop, it’s about half insulated and I have an electric heater in it. I live in the Portland Oregon area so there’s plenty of humidity. I’ve had a problem with Sapele warping and twisting when cut into rails and stiles, the wood is at 6.5 %. I bought a temp/humidity gauge and the temp was ~60 with 49% humidity. I bought a Whirlpool 25 pint dehumidifier, ran it ~24 hours and heated the garage to 69 deg. and the humidity went down to 44%, which I would expect the relative humidity to go down with the temp going up. The dehumidifier had about one pint of water after 24 hours. So, is this about what is to be expected? Is the dehumidifier working, what level should it bring it down to? Is there a better way?
I was expecting better results.