We have a new Bryant puron heat pump I caannot get a hold of the company who installed it. (what else is new) It keeps freezing up so as a first step I took the filter out of the large vent in the ceiling and cleaned it with the water hose. I am now ready to put it back in but one side is white the other side is mesh which side goes facing up towards the venting and which side faces my living room also can you put it in damp. The company failed to leave instruction manual and claim they had to order a new one. This is a filter I am supposed to not have to replace but just clean.