In our last rig, all air intake came from the large furnace intake under the fridge. It handled the furnace and the AC. In our new rig, their is an intake for every output vent. These provide air for the AC/Heat Pumps. The furnace intake is under the washer/dryer stack. Lots of types of rigs and apparently more than one way to skin a cat. We have a rectangular grill near the floor on the Kitchen Island/return. Looks like a speaker grill but can't determine if sound comes out of it. Would be a subwoofer if that is the case. Only had the rig a year so lots of learning left. We also have the rear heat from the automotive heating system. Threads like these are interesting.
Kyriana(14)Aidan(11), Emily and Olivia (2) Grandchildren
2014 Winnebago Adventurer 38Q
2013 Honda CRV, Roadmaster Falcon AT, Invisibrake