Just recently I bought a Bionaire digital warm-mist humidifier for $70, thinking that its digital humidistat would maintain a consistent humidity in my room. However, the humidistat is not able to maintain a consistent humidity in my room, because even when the hygrometer in my room read 65% relative humidity, the digital humidistat on the humidifier read 30% RH. The old humidifier that I had was also digital, and it did the same thing. So why are humidistats on digital humidifiers so inaccurate? And what's the point of buying a humidifier with a digital humidistat if it can't even maintain a certain level of humidity?