This isn't right. If the heaters are rated for the same power output they
will consume the same energy. What changes is the current drawn by the two
devices. For example if the heater is rated at 1000 watts and connected at
220 volts it will draw 4.5 amps; if rated 1000 watts and connected at 110
volts it will draw 9.09 amps. The power consumption being the product of the
voltage times the current will be the same in either case.

A word of caution, check the device nameplate to verify the voltage rating
before connecting it to a 220 volt source.

Doug



The unit operated at 220V should use about half of the power used by an 110V
unit.  You'll save on electricity.



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