House is 5 years old. Freon was checked a few months ago. Dryer vent cleaned 2 months ago. We're pretty good about using bathroom fans so I don't think it's from showers either.

Anyone take long hot showers tonight or are you running the clothes dryer, is your filter in the dryer filled? Mine gets more humid the more lint in the filter.

Freon? I assume if you know about the condensate pump then you'd know that it could be the Freon.

Humidity will rise, so it may not necessarily be from upstairs though, so don't rule out an issue from downstairs.

Did it click over to fan? Mine does that a lot too. I know these are stupid questions but these are all the issues we have with ours when it feels humid.

how old is the house?

60% humidity inside for the 2 upper floors where we have one A/C unit. It cools fine, but just feels humid.

Bottom 2 floors (separate a/c unit) cools and humidity is fine.

Any ideas what to check? I looked at the inside air unit and don't see any water spilling around, nor alarms from water leaks. The condensate pump appears to be fine (no beeping or anything).

I'll call the HVAC repair people on Tuesday, but was hoping to figure it out on my own before then.