Acquired a Mr Heater, Portable Buddy Heater (4,000-9,000 BTU Model) and found that most of the heat comes straight up off the top-front. Looking around for a fan of some sort, I found that O2 Cool makes a 5 inch, battery powered, swivel type, clip fan with two speeds and fairly long battery life. After just clipping it to the fold-down handle on the heater, adjusting the angle, and using low speed; we had heat coming off the top of the heater being blown out into our little trailer. Clipped to the folded-down handle, the fan is in cool air behind the heat and the battery pack sets on the floor behind the heater where it is cool. We only use this heater when we don't have 115V and to knock the chill off before bedtime or when awakening in the morning. We open the windows and the top hatch to adequately vent and installed a CO monitor down low as well. Just passing along the idea for whatever it is worth.
Jim B / Utah