@myneutralliving: We’ve had this ultrasonic humidifier for about two years now. As soon as one of us begins to feel congested, we run and turn this on right away. I kid you not it gives us the most restful night of sleep in the midst of our sickness. This one is specifically for larger rooms, and provides 70 hours of runtime. I get at least six full nights of use before I have to refill again. -link in my amazon storefront (found on my instagram page) #homedics #humidifier