[wingnut60]

Been using a Lasko tower space heater for 2 years, after my Vornados cratered. Has worked well--temp controls + rotation choice.
Need 2 for really cold days/nights, long cold spells. Remember that the furnace may be vented into the basement to heat that area, and the space heaters won't do that.
If you had an electrician handy, you could do any wiring you wanted done, but you won't be able to hook into a standard 240 house hold plug--50amp RV service is 120volt on 2 legs. Be careful of trying to use 240 household AC vs thinking 50amp is 240volt--doesn't work that way.