Camco Olympian Heater what size worked for you?

pnichols really came up with a good idea IMHO. The 8,000 unit struggled in my bus not because it was too small but because the dispersion needed fans two of them. Of course heat rises and what good is a 90 ceiling and 45 degree bedtop knee height? The fans are 4 watts each and blow air down from the ceiling in the dining area then again near the bathroom door. This was on a 4F day when I said Adios forever and crossed the Rio Bravo.