Ah, the elephant in the room. Distilled water isn’t free. A gallon costs about a dollar or two. You might go through a gallon every day or two. That adds up! Suddenly, your humidifier has a drinking budget.
Is it worth it? That depends. If you have a tiny humidifier in a bedroom, maybe not. If you have a massive whole-house humidifier, maybe yes. It’s a cost-benefit analysis with a splash of personal comfort.
You can also buy a countertop water distiller. It’s a bizarre little gadget that looks like a sci-fi coffee maker. You plug it in, wait an hour, and get pure water. Plus, it makes your kitchen smell weirdly clean.
Do You Have to Use Distilled Water in a Humidifier? Really?
Funny Side Effects of Tap Water
Some people report a sweet, dusty smell from tap water mist. It’s not pleasant. It smells like a wet basement decided to hold a dance party. Distilled water has no smell at all. It’s the ninja of liquids.
Also, tap water can harbor bacteria. Distilled water is sterile. If you forget to clean your humidifier for a week, tap water turns into a swamp. Distilled water just sits there, being pure and judgmental.
Ever left water in a humidifier for a month? Don’t. It grows scary biofilm. That slimy goo is not your friend. Distilled water slows this down significantly. It’s like putting your humidifier in a protective bubble.