There has been quite a discussion here about the "heated underbelly" and if you do a forum search on this topic, you should find numerous posts and threads about it. The heated underbelly will only be heated so long as your furnace is running - otherwise, your underbelly will remain unheated. Some members have carried out fairly extensive modifications to the underbelly to ensure that it is, in fact, "heated".
My answer to your question - "Is it all that it says it is?" ----- is NO.
I would spend some time browsing through these posts and threads and you can draw your own conclusions.
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2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax
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