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CPAP Humidifiers FAQs

Read answers to commonly asked questions about CPAP humidifiers. What is a sleep apnea humidifier, who needs one, and what is the best humidifier to buy.

What is a CPAP humidifier?

A humidifier is a part of a CPAP machine that adds moisture in the air you breathe via a small heated tank of water. The humidified air helps to prevent dry mouth after waking up. Some CPAP machines may have humidifiers built in, while others may use a separate part.

Can a CPAP humidifier help with nasal congestion?

A humidifier for sleep apnea can in some cases assist with nasal blockages caused by environmental factors, such as hay fever. CPAP humidifiers help the air entering the nasal passages to contain more moisture, offsetting the drying process caused by CPAP or your environment.

Do I need a CPAP humidifier?

A humidifier is a way to prevent dry mouth that may occur when waking up after using a CPAP machine. Depending on your environment or if you do not experience dry mouth, you may not need a humidifier. Speak with a CPAP specialist at CPAP Australia to discuss your options further

Why is my CPAP humidifier’s tank empty in the morning?

Throughout the night, a CPAP humidifier heats the water you put into the tank, turning it into steam. It is ideal – and natural – waking up with a small amount of water in the tank. If you find your water tank is empty in the morning, try filling it more – but not above the maximum capacity. Alternatively, turn the heat setting down.  

How to clean a CPAP humidifier?

Proper upkeep of your CPAP humidifier is integral to ensuring the longevity and effectiveness of your device. Every morning you should empty any leftover water, and refill with clean, distilled water right before bedtime for optimal use.

  1. Once a week you should conduct a more thorough clean of your humidifier tank. Here’s how:
  2. Gently remove the water chamber from the humidifier machine prior to cleaning
  3. Once a week, disinfect by mixing an even amount of vinegar and tap water in the chamber
  4. Let the water and vinegar solution soak for approximately 30 minutes
  5. Use tap water to rinse the chamber
  6. Leave the chamber to air dry