Not at all! The IQAir machines use very little electricity to run. In fact, on low speed it only uses 20 watts (for 220/240 Volt), and with average use it will draw about as much electricity as an ordinary 100 watt light bulb. The actual energy usage will vary with the fan speed you select, so here is the exact energy consumption for each of the six fan speeds. Speed   Energy Usage 1           20 watts 2          36 watts 3          54 watts 4          74 watts 5         105 watts 6         135 watts