The humidifier shuts off automatically when water in the tank runs out. The 1.05-gallon tank is enough to keep the whole house free of dry air. The cool mist humidifiers for large rooms can cover ...

Cool Mist Evaporative Whole House Humidifier (up to 2,300 square feet ... with different models specializing in small, medium, or large spaces. The cost varies based on size and complexity ...

That begs the question: Which humidifier ... whole-house humidifiers, which might be worth the investment if you have severely dry air or a chronic case of the sniffles. Cool mist and warm mist ...