I put a dome screen in front of the cooling unit to keep it from clogging as fast and I've only cleaned it a few times so I can't speak to the need for disassembly.
My other hack, which you may have read a page or two back, is to use a straight Splinter stem upside-down as a WPA and pair that with a 18mm j-hook. Better flavor and no need for the cooling unit so that's my default at home. You can even start a bowl with the j-hook and finish on a bubbler if the hook doesn't afford enough cooling. I'm keen to find a dimpled j-hook or some other non-bubbler cooling stem too eventually.
I like to flip between glass pieces during a session as well. Get just the perfect amount of cooling and heat for each part of the bowl. We fancy.