Tip #1: Clean your humidifier every week. Even the best models get icky. A vinegar rinse is your new self-care ritual.
Tip #2: Don’t use essential oils unless the machine says so. Oils are like that friend who shows up uninvited and breaks your blender.
Tip #3: If you have extremely hard water (like, you can chew it), consider a demineralization stick or a simple water softener pitcher. But honestly, the evaporative models laugh at hard water.
Humidifier Designed To Use Tap Water at Jean Begaye blog