Bella does warm up but when compared to our class "A's" air flow with the furnace there just doesn't seem to be the same amount of air flow. Also (and I think this because we 1) Don't have a basement running under the entire rig (exepct where the engine is located) like the Class A which serves as an insulator and 2) because there is that "vent" that shares heat with the basement...but this also makes for sharing of cold from the basement as the "vent" is just a big "pneumonia hole" with no flap that closes when the heat is not on.) the heat that is generated disappates pretty quickly (the vinyl floor is FREEZING so we use throw rugs when it is cold on them).
The furnace is engaged and heating though so its not a mechanical/heating plant problem.
Sounds like our comparison is just based on that in a house and from the Class "A's".
Jerry and Stiles thanks for the quick responses...though Stiles I am disappointed that you wouldn't just "know" exactly what the air flow is like in Bella without being here!! LOL!
Robin