Recently acquired a 2014 Newmar Bay Star. It has Dometic Ceiling ducted AC's. The return air is also ceiling ducted. Does it have a filter? Thanks in advance for any assistance,
All of those little round return ducts should have a filter in them. If not you can make some from window AC foam filters, or call Newmar parts and get some. If you DON’T have filters in them now, you aight also want to have the AC cleaned.
BTW... Just grab the center section of the round vent covers and pull straight down.
Incase my using the “All” is confusing, just those that are returns need filters.