Do you use the Water Filter Kit for your Transcend 365 miniCPAP humidifier? Depending on the quality of the water you use, you will need to replace the filter on a regular basis. This prevents the heater wick from damaging and it will make sure you will enjoy a long lasting clean and comfortable sleep apnea therapy.

The color of the water filter will tell you whether it's time to change it: a new filter is purple, when it's time to replace it, it will turn yellow.