Where to Put a Humidifier You can ask yourself some specific questions before we start: Why would you need a humidifier, do you decide to install the humidifiers in your living house, dormitory, baby's place, workplace or any place else? How big is space or a whole house in which you want a humidifier to be installed? Will you bear noise? Is your system too loud? And particularly if you have children or animals, take the extra precautions you need to use. You will have to make sure these before moving forward and finally 'where to put the humidifier'. Using a hygrometer to measure the relative humidity level in the space in the region where a humidifier is used. Well, according to Therma-Stor, it should be around 40%-5%. In the winter months, it becomes worst and considered to be less than 40 percent RH. Therefore, you can suffer dry or itching throat, dry chemicals, congested sinuses, nose-bloody, vocal cord irritations, dry eyes, fingertips, cracking lips and knocks,...