Quote Originally Posted by GaGrown
Being an HVAC, Master sheetmetal mechanic. I have seen 1st hand that an air conditioner in a window will raise humidity. Hot and cold air meeting you get condensation on the walls and anything metal or plastic.Making the risk higher to aquire an airborne mold or mildew. The best senario would be to use only the dehumidifier and draw air into your room with a passive vent with a backdraft damper.You keep your sealed room aspect. Use a scrubber and a dehumidifier.
I copied the following from:
How air conditioners work
There are three main kinds of air conditioning systems. Summer air conditioning will clean, cool, and get rid of moisture from the air. Winter air conditioning will clean, heat, and add moisture to the air. Year-round air conditioning will clean and control the temperature and the amount of moisture in the air throughout the year.

With a sealed room, it will (or should) be only "summertime" in there while the lights are on.

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