The HC105 Humidification Starter Kit from Fisher & Paykel improves patient comfort and compliance by providing humidified air during CPAP and BiPAP therapy. It is an external cool passover humidifier and therefore is compatible with almost any CPAP/BiPAP system including those from Respironics, ResMed, Puritan Bennett, Covidien, DeVilbiss, Fisher & Paykel, AEIOmed, and others. The HC105 Humidification Starter Kit is designed to make it easy for CPAP/BiPAP users to be introduced to humidification without having to purchase a complete heated humidifier. The kit can be used on its own as a cold passover humidification system and then, if higher levels of humidification are required, it can be easily upgraded to a heated system by adding the HC150 Humidifier. Most users of CPAP technologies will need a Cool Passover Humidification Kit for HC210 / HC211, SleepStyle™ 200 Series Product CPAP Humidifier to increase moisture within the pressurized air that's supplied to the lungs. It's possible to use CPAP Machines without buying a humidifier, however sleep is improved considerably if one is used. A Cool Passover Humidification Kit for HC210 / HC211, SleepStyle™ 200 Series Product Humidifier cuts down on dryness in the nose and mouth, which means that sleep apnea sufferers can breathe much more easily and reduce episodes of night time awakenings. Furthermore it can prevent the occurrence of infections that come about as a result of inordinate dryness. Cool Passover Humidification Kit for HC210 / HC211, SleepStyle™ 200 Series Product CPAP Humidifiers can be utilized with an array of airway pressure machines such as APAPs and Bilevel options.