This is our first time experiencing 80+ % humidity in conjunction with 90 degree temperatures. We are from the west coast. We are now in Indiana for a month, then Kentucky for a couple more. M...
80% RH and 90 DegF is not all that high. Wiat until it really gets humid.
For the high humidity cooler days, run a small cube heater on the low setting and the roof air at the same time. This will create enough load to force the A/C to run some and it will dry out the trailer. This is basically what a dehumidifier does. It cols the air to drop the dew point and then blows the air over the condenser for reheat.