We have a vacation/rental condo in SW FL. The air handler in the condo is located in the ceiling right when you come in the front door.

In the past, we have had issues with the drain getting gunked up and the pan dripping. One time, the condo was vacant for months and the dripping caused a flood that drenched the adjacent carpeted room.

Anyhow, we were just there and took a look up there -- very rusty, could be original from the 1970s.

I have limited knowledge of these units and wonder what I should consider when I get quotes to replace. One thing I can think of is noise -- when we are there in the summer and actually running the AC -- I find it to be noisy -- anyway to ensure we get a quiet unit?

Anything else?

Also, any wild guesses on cost? The AC unit that is on the roof does not need replacing as it is relatively new.

Thanks.