Do I need a humidifier for my CPAP?

Last updated on July 7th, 2023 at 01:36 pm

Continuous Positive Airway Pressure (CPAP) is proven to be the most effective treatment for Obstructive Sleep Apnoea (OSA). And the most frequently added feature is a humidifier. CPAP users can experience dryness of the nasal and throat passages, which is caused by cold and moisture-less air. This is particularly common for mouth breathers, who use a full face or oral mask. A humidifier will add moisture to the air from the CPAP, therefore preventing this dryness and irritation, and increasing the effectiveness of CPAP therapy.

As we approach winter, the air is getting much colder. Therefore, the air being supplied to your CPAP will also become colder. Cold air holds much less moisture than warm air, and therefore can increase the chances of dryness and irritation. CPAP users have the option to increase their comfort, through various means to warm up the air they receive through their CPAP.

As discussed, a large number of CPAP users will opt to use a humidifier alongside their CPAP machine. This will add both moisture and warmth to the air being supplied. An issue that can occur whilst using a humidifier is ‘rainout’ in the CPAP tubing. This is because as moist and warm air leaves the CPAP machine and travels down the tubing towards the CPAP mask, the colder air surrounding the tubing causes the warm air inside the tube to release its moisture, causing gurgling noises in the tube and condensation on the CPAP users face.

In order to reduce the possibility of ‘rainout’ occurring, CPAP should follow some of the following tips.

  • Increase the temperature of your bedroom, in order to reduce the temperature difference between the hose and the room.
  • Keep your CPAP machine at the same level, or lower than your bed.
  • Lower the temperature setting of the humidifier.
  • Cover your tubing with your bedding.
  • Get yourself a Fleece Tube Wrap to keep your tubing warm and protected.
  • Get yourself a Heated Breathing Tube.

Not every CPAP user requires a humidifier. However, if you are experiencing a dry mouth, nose, or any irritation in either of these areas – it may be worth considering trying one. More information about individual products can be found here.