Going away this weekend...turned on the Furnace to check it and the A/C fan came on at the same time blowing cool air through the central ducts....That seemed odd to me....Called the RV center about this and he told me that's so the hot air rising goes thought the central system.....to shut that feature off, I need to put the fan on AUTO. I did, and just the furnace comes on now....ok great!
My question....Does the heat actually get warm enough and rise enough to use the a/c fan to circulate warm air through the central ducts??? That must take awhile.