Properly sizing an electric heater to your specific room size and type is an important step in optimizing comfort and reducing energy waste. A heater that is too large for the space will not heat the space more quickly.
A heater that is too large for the room will continue to heat for an extended period of time beyond the temperature set point, wasting energy. We call this a temperature swing. Alternatively, a heater that is too small will run for a longer period of time than would be necessary with a properly sized heater.
Use the below 4 easy steps to calculate the optimal heater size in watts per square foot.