A humidifier, or himidifier, is necessary if someone using a CPAP machine experiences dry throat or burning nose. This may be caused by using relatively high air pressure, such as 12 hPa (cmH2O) or more, or using it in a cold climate with less humidity in the air. For example, on the northern highlands, etc. However, in some cases, there may be such symptoms without the pressure being very high. This may be caused by nasal inflammation or allergies.
but for the most part In Thailand, humidifiers are rarely used as the weather in our country is rather humid. However, it's best to look at yourself first. That is, if using the machine and having a dry throat or burning nose It is recommended to find a humidifier to use more.