You are not misunderstanding anything and you are not being a smart. First of all, the carbon filter needs to go before the fan so it is sucking air thru the filter. I believe there is something that is not function correct. Make sure your exhaust fan is running. What size is your exhaust fan? and your intake fan. I never used intact fans, just passive air at 2 1/2 times what the forced exhaust is sized at. If your RH according to the weather is 44 and your tent is at 70 either a piece of equipment is not function correctly, the probe for the Rh sensor is out of position or there is like a humidifier in the house. Because I believe you stated that your exhausting out of the house. Aqua is right about not needing a dehu with those numbers. Take a look at some of this stuff and make sure all the equipment is function correctly.