I have a neat little NOMA fan heater that is very quiet. It heats our little 197 in no time. Most of those little heaters make a lot of noise, not this one. Of course, I have never been able to find another one!
2012 Jay Feather 197 w/pull-out
1997 GMC Sub 1500 4x4;
or 2015 Ford F150 4x4 SuperCrew EB