Originally Posted by gasman94
I've got a '14 390FL. I went to the storage area yesterday to start it and the genny. Ran it all for about 45-60 minutes and the temp only raised about 10 degrees. 36 to 45-46 inside temp. Very low output from both furnaces....surprisingly the back floor vent just trickled out heat also. Must be doing something wrong. Also, as with others, vent hoses terminate under the couch.
That's just the worst thing to do is not install a boot box to connect a duct to. What makes it worst is that it is only a 2" run. You would be better off to take off all the 2" and just use 1 4" in a boot, that would heat a lot better and just get rid of all the 2" back there. A 2" duct can not carry enough CFM. And on top of that you are even losing more by the twisted length. In an hour you should have been up to at least 20 degrees if not more. But that is just my opinion.