The answer to 'why is my humidifier high energy bills' is that a malfunctioning or inefficient humidifier can significantly increase your energy costs. Humidifiers use electricity to operate and can consume a lot of power, especially if they are running constantly or inefficiently.
Some common causes of high energy bills from a humidifier include: a humidifier that is too large for the space, a humidifier that is running constantly instead of cycling on and off, a humidifier with a faulty thermostat or sensor, or a humidifier that is not properly maintained and has built up mineral deposits. If your humidifier is old or not working properly, it may be running inefficiently and costing you more in energy bills.