Is a 120V 10000 BTU air conditioner cheaper to operate than a 240V 10000 BTU?
The way to answer this question is convert all factors to power.
Voltage, current, watts, horsepower, BTUs. I will save you some
time. They cost the same to operate. One thing to remember in your
career, watts = watts no matter what(watt)...pkazsr You already
have the answer. 10,000 btu/hr is 10,000 btu/hr, or the equivalent
number of watts either way. There may be some minor difference
because the higher voltage unit will pull half the amps to deliver
the same power.