Stealth RMH?

Hello Everyone,

A few years ago I looked at building a RMH for my workshop. I found that circumstances dictated keeping a low profile and keep the exhaust from being visible from the street.

I failed to find a suitable solution and wound up installing a  pellet stove. It has turned out to be a disappointment. Pellets are too expensive and the stove is very inefficient.

Now I am looking again to see if I can find a better solution.  

Does anyone have any suggestions for a RMH with a "stealth" exhaust?  If I can keep it below 6" tall or exit through the roof and keep the termination "low profile".

Any thoughts on stubbing the stovepipe out of the roof about 6" and then coveting it with a "whirlygig" attic vent like this: https://www.walmart.com/ip/TURBINE-BRACE-14IN-MILL-INT-AL/40771918?wmlspartner=wlpa&selectedSellerId=1293&&adid=22222222227028293049&wl0=&wl1=g&wl2=t&wl3=338656228256&wl4=aud-834279576126:pla-661645443495&wl5=9033806&wl6=&wl7=&wl8=&wl9=pla&wl10=113137480&wl11=online&wl12=40771918&veh=sem&gclid=Cj0KCQiAy579BRCPARIsAB6QoIZX28o6OJXcbfUXW-RCMn5XFP_hlDnmdVUxSbjSjcL2CXV7FHZn4l4aAisnEALw_wcB

BTW: My workshop is a common metal pole building. Roof is metal.

Thoughts?

It may be difficult to completely eliminate all smoke. May be doable with the right RMH and right starting procedure, but it would leave no room for error with a visible exit for the exhaust.

Make sure you have a stockpile of really dry wood, including tinder and kindling, to ensure that fires will start fast and hot. Is there a "back" side of the roof where you could put the exhaust inconspicuously, aside from keeping it short? A bunch of other things around the area to obscure the source of any smoke or vapor might help too. I would incorporate a bypass from barrel to chimney to give strong draft at startup and hasten a good clean fire.

Have you considered putting a cheap computer cooling fan at the top of the exhaust?  It will help with initial draw, as well as dispersing any unburnt gases (smoke).  

Pellet stoves smoke a bit on start up so can you not just keep it registered as that? (if you need to register it) I doubt many can tell the difference between pellet smoke and kindling smoke.

If you already have a pellet stove without external hassles (authorities, neighbors), why can't you just do as Skandi suggests?