3B Medical Luna G3 BPAP 25A With Integrated Heated Humidifier is an updated bilevel design with a smaller lightweight body and integrated modem capabilities. The G3 series has a pre-heat feature to warm the humidifier water up for ultimate comfort and is designed with multi-stage noise reduction technology to ensure sound performance is under 26 dB. It is loaded with new features and settings to make bilevel therapy more comfortable and convenient.