How much does it cost to run the electric system?
It depends on how much heating output is required. However, the heating resistors have a thermal output of 100%, so the power of the single resistor correspond to the thermal output and therefore the cost of running it will correspond to the energy used at the maximum output. (Example 900 watts = 3300 watts resistors. 900 watts x hour (at maximum power) x cost of unit of energy.) As it reaches the desired temperature within 20 minutes from turning it on, if the building is well insulated the full power is only released to reach temperature and then to top up the heating when the thermostat looks for heat.
