bksaun wrote: For sure stay away from the 110v version.
AFAIK this doesn't make difference except you can have smaller wires on the 220 version because you can have lower amperage.
watts = voltage*amps
Your amperage is lower on 220 but you have more voltage so no net gain. For example you get 3.4 BTU's from one watt whether it's 110, 220 or one million volts. Your 1500 watt electric baseboard is going to consume just as many kWh whether it's 220 or 110 for the same amount of BTU's.