The leaves get stuck in the plenium and the vent box. Some will blow through the heater and the vent but mostly they just get stuck and you have to clean them out. If you remove the heater blower motor and the vent doors, you can clean them out by vacuuming, using compressed air or digging them out. We have been installing 1/4" mesh hardware screen painted flat black under the cowls and this works well. Some of the vendors sell items for this also.
Jim
|