Is it only with the AC on? First thing to check would be a blocked drain tube. Don't know the position of the glove box in relation to the unit on a Honda, usually wet carpet is a sign of the drain tube is clogged. Drain tube worth a checking anyway. I've had that problem more than once, vehicle parked under a tree.
If it is from condensation on the outside evaporator housing can be cause by a low Freon charge.
You really need to have a look at it. Good Luck!
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