Here’s a handy calculator;
To work this out, we need to know pump dose amount and how often it doses which is measured in Hz (unit of frequency – 1Hz would be once per second) – if you do not use the controller in Hz mode select the relevant power mode (fan speed).
Most of these heaters use a pump that doses 0.022 ml per dose cycle with a frequency of between 1.4 to 5.5 Hz.
Edit the cost per ltr, pump dose and power mode (fan speed) / Hz to get customised result;
Please use this as a guide, allthough mathematically correct, real world conditions can vary very slightly!