This looks just like the old one but is better. It has a sensor outside the unit and gives a digital reading. It also flashes "F" meaning it needs to have the tanks refilled. What a difference it makes in the house. We live in the desert so the air is very dry so the operation works well with heat and air conditioning. Just set the desired humidity and you're set. I keep it on low since the fan can be a bit loud. It automatically controls the on and off by the humidity level in the house. If you're looking for a whole house humidifier you just found it. May it last as long as the old one.