[RMcNeal]

Unless there were a massive amount of water in the floor ducts, it's unlikely that it caused any damage to the furnace. The furnace is mounted above the level of the ducts in most cases. I would think if you were able to clean up most of the water, that any residual would evaporate over time. You may invest in some damp rid for when the rig is stored. I live in a very humid climate, so I use them all the time while in storage. They do work well, but typically only last about 2 weeks before needing drained and/or replaced. I recently switched to the type that take a large tablet with a plastic bin. Found that to be cheaper than simply throwing out the others.