Device to save electricity bill (Myth or reality )

[Criminal]

But you can use a regulator to turn down fan speeds and drop power consumption. There isn't any power 'loss' because of the higher voltages.

OT: Is it possible to reduce the power consumption through conventional (non-electronic) fan regulators? I guess, most of the people don't give it a thought whether their regulator is adding resistance in order to reduce the spin rate. Am I correct?

 

[Kuantum]

Just to add - a Kill-a-watt is only for measuring power consumption.


Plus it says its designed for 115V supply, not 230V. Will probably smoke the kill-a-watts electronics if its not geared for both voltages.

Thanks for pointing that out...

I automatically assumed that most of the appliances designed for 100V-250V like most modern adapters...

 

[Kuantum]

OT: Is it possible to reduce the power consumption through conventional (non-electronic) fan regulators? I guess, most of the people don't give it a thought whether their regulator is adding resistance in order to reduce the spin rate. Am I correct?

Modern regulators don't add resistance. Triac inside chops off fraction of a sine wave cycle... So yes it saves power compared to old regulators.

The older large sized regulators had resistors to control fan speed. So it diverts power from the fan to the resistors and you've got a nice heater.