Many of our CPAP machines have the option to add on integrated humidifiers that attach in some way to the machine. But these units are still essentially two separate pieces of equipment. There are only a few manufacturers who actually produce an all-in-one humidified CPAP machine and this includes Fisher & Paykel and Respironics. These units require only one outlet with a removeable chamber to add water to the humidifier component. The Fisher & Paykel ICON series and the Respironics SleepEasy series machines are great choices for those individuals who value a superior quality CPAP machines.