The answer to 'why is my humidifier high energy bills' is that a malfunctioning or inefficient humidifier can significantly increase your energy costs. Humidifiers require power to operate the fan, heating element, and other components, and if the unit is not working properly, it can use more energy than necessary.
Some common causes of high energy bills from a humidifier include: a clogged or dirty filter, a malfunctioning thermostat, leaks in the ductwork, or an oversized humidifier for your home. These issues can cause the humidifier to run more frequently or use more power to maintain the desired humidity level, leading to higher energy consumption and costs.