Now, my limited understanding going over the years of wisdom contained in the RAS archives (!) is that internal condensation occurs in the evening when the shell of the trailer cools faster than the air inside the trailer. In this case, continuing to run the fan in the early part of the night allows the internal and external temperature to equalize and thus prevent internal condensation. Now, I am not really sure how leaving a fan on all the time works for the better in the morning: The glider has been cold soaked all night and the morning warmer external air is now pulled in the trailer by the fan. Will that warm morning air condensate against the cool glider?

So… fan on or off at night? Fan on until midnight and then off until 10am? A simple timer could help implement a creative schedule for the fan operation if there is a benefit to it.

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