We certainly don't have those here in S.W. GA. but I'm familiar with what they are as my daughter lives in Alaska. I would think that air pressure, albeit low air pressure, would blow out the fins to clean them and then a good vacuum to clean up the blow-out stuff and finish off the fins. Or you could do as we do our A/C units outside here: Just use a water hose to "blow" out that coils on our units from the inside out. :thumbup: