Originally Posted by msturtz
My house dehumidifier only runs if the humidity rises to above the set point. This means my power usage is nothing if the humidity is low.
That is true. But how low does humidity need to be for a trailer to be OK in storage? If it is low enough that it doesn't run, then why even buy a dehumidifier?
Within the capabilities of the fan and relative position, a dehumidifier can only remove moisture in the general area of the unit. In my experience humidity definitely has a tendency to equalize within a confined space, but it takes time.
The problem in efficiency is that you can only remove so much moisture in the immediate area in which the dehumidifier unit is located. The humidity level in the overall general area will only reduce at a given rate. If you are running a larger dehumidification unit (bigger compressor) during that time than is necessary then it is less efficient. Kinda like cruising down the highway at 45 mph with a big block V8. It just isn't as efficient as it is when doing that with a 4 cylinder engine. It is better to size the unit for the work required.