I have a 4800 watt 30 amp construction heater. Those little ones with a circular element and a fan. I allow have a residential 2200 watt electric base board heater on a wall thermostat. My shop is 14x18 and well insulated but we get plenty of below zero days. I'm wondering if either of these two heaters is cheaper to operate than the other.
I prefer the shop heater because it's up out of the way and the baseboard is tough to keep clear because it is long and has tools in front like my bandsaw and drill press.