The M Series heated humidifier by Phillips Respironics receives mainly positive reviews, but mixed and negative reviews exist as well. Positive reviews mention that the humidifier has a large reservoir that is easy to fill and clean, while negative reviews note that the humidifier leaks, is noisy and poorly designed.
While some reviewers report positive experiences with the M Series heated humidifier by Phillips Respironics, others post negative comments concerning the appliance. Several positive reviewers note that the humidifier is very easy to install and matches with other air conditioning appliances.
Many reviews also mention that the humidifier functions as expected and is especially helpful for persons with upper respiratory health problems. One reviewer mentions that the humidifier keeps his nose moist at night and makes it easier for him to breathe. Other reviewers also mention that the appliance helps clear running noses and other common cold symptoms.
While some reviewers post positive sentiments about the humidifier's reservoir, others mention having had negative experiences. One reviewer mentions that the reservoir is easy to fill and well-marked for easier water measurement, while another states that the reservoir constantly leaks, even with accurate water measurements.
Other reviewers mention that the humidifier can be extremely loud on some nights, making it difficult to sleep. Others complain that the machine's design is flawed and it takes time to learn how to operate it efficiently.