It is clinically proven, on more than one occasion, that humidification improves compliance and helps CPAP users avoid suffering from a dry nose, mouth and throat. This is even more true for those in, or often visiting dry climate countries but even in the UK and Europe, CPAP users report great benefits from a humidifier added to their setup.
For mouth breathers like those with a full face or oral mask, heated humidification is a must-have feature. It is normally the hairs in the nasal airway conditioning the air with heat and humidity before entering the lungs. Someone who breathes through their mouth misses out on this conditioning and is likely to suffer from an uncomfortable dryness without a humidifier.
Are you after a standalone humidifier that works with any machine, a machine-specific humidifier that integrates with your current CPAP or do you need parts and spares?