One of our concerns is the cost of running electronic devices, which is why I asked about the wattage. Running something at 180 watts 24/7 isn't as cheap as running something at 50 watts 24/7.
With heating elements you can't just take the wattage and multiply by the hours it's plugged in,
much often depends on the ambient temps and the power cycling of the heating device.
I tracked usage with a Kilawatt when I first used the brooder heating pad, did the incubator and water heater too, for the same reason and also out of curiosity.
Wrote down time and the kwh used and reset device approx. every 24 hours, then calculated total kwh with our power cost(~$0.15/kwh).
The incubation was like $3-5 total...brooder was about the same.
Didn't keep the data, so can't cite it, sorry.
If you really want to check your power usage/cost, invest $25 in a Kilawatt device and start recording.
DH is a hardware/software engineer, so is quite used to calculating power consumption costs, and I think we have all the measurement equipment here. I'll ask him for some numbers...
-Kathy