Ok, As the new camping adventure season here in SW PA starts winding down, I turn my newbeeto research to winterizing our pup. So far I have checked all places under pup where hoses go into floor, for proper seal. I understand to use WH bypass, I will also use RV antifreeze in water lines and into Water pump. Drain WH, check anode and return. I have placed screen behind outside covers for where controls are for fridge, and would like to know if a screen over furnace vent is needed.