Our last 3 5th wheels have had the Fireplace, yes they do put out some heat I think around 15,00 watts which isn't very much but we used it in Colorado and Montana to knock down the chill. As for storage space, in most of our 5ers we have had plenty of storage space. As a matter of fact we have found the more storage the more stuff you haul around that you don't use. The ambiance along is work the money to us. We also do carry small heaters and do use them. Good Luck... GBY..
P.S. We are in the first RV park that we haven't seen a Montana, but there is a Everest here
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P.S. Junior: There now is a Montana in the Tom Sawer RV park in West Memphis Ark.
