Question about heat pumps, theres one in a condo unit that was leaking water, the therostat was set to cool and they noticed a build up of water on the floor. Water was pooling up around the red circle and then coming out of the metal vent cover and on to the floor. Could it have been a clogged furnace filter causing the machine to "work harder"? The furnace filter looked pretty used and was probably due for a new one. I went out and bought some more filters and will have it replaced for the tenant.