Question: how much electricity does an electric sauna use?
Answer: The average cost per kWH of electricity in the U.S. is approximately $0.11, so a 5 kW heater will cost approximately $. 50 to run for one hour, if the heater runs continuously for one hour. Typically a sauna heater will run for 75% of a one hour session. Thus, a 5 kW heater will cost about $.