Is this a 17' Bigfoot
? If it's the same as my furnace
, there is no replacement for the fan. Even though the current Hydroflame looks exactly
the same from the outside, apparently the fan for the new model won't fit the old model, and they don't sell the old model fan. I would think it could be refurbished, though. Unfortunately, a new Hydroflame is somewhere around $800. To replace with a cheaper Suburban means modifying your cabinets, cutting new holes in the camper shell and filling in old holes. Really no good options unless you're willing to spend some money or do some fabrication work.
This gets into messing with electricity and propane
, so don't go into it lightly. With that said, I've pulled my furnace multiple times and replaced most of the electronics. My fan had started making a bit of noise, too. There's a good chance that pulling the furnace, opening it up and messing with the fan assembly could help. It can get a little off center, and that can cause noise. In my case, it had started making noise. After taking it apart and putting it back in, it made more noise. I took it out again and now it's quiet. At least as quiet as these things get.
The way the fan sits in there, it's possible for it get off center. And it's kind of trial and error to get it set right...
Taking the furnace itself out is pretty simple. Digging in to the internals is something I'm guessing you already know whether or not you're comfortable with...
If you decide to, let me know and I'll post some photos. I think I still have them, though I tend to delete old "project" photos once they get a little old.