Sorry, I didn't see this until today. Yes it is a defect of design, not manufacture. I was told it goes over the tanks or through that compartment, and by the time it gets to the bedroom it's just not hot anymore. Not too big of a deal, but annoying none the less.

Hi, I noticed you have an Apex 259BHSS. I recently purchased the same model a couple weeks ago, but I noticed that when using the furnace there is no heat whatsoever in the master bedroom...its a cool air being blown into the room. I've been told by the dealer that it is because of the long duct run from the furnace to the room that the air has cooled down by the time it reaches the master room. I was curious to know if you have the same issue with your trailer? Thanks so much!