Do You Need to Change the Water in Your CPAP Machine?

One of the crucial and often overlooked aspects of using a Continuous Positive Airway Pressure (CPAP) machine is its maintenance, particularly the water in the humidifier chamber. This article aims to clarify the necessity of changing your CPAP water, the benefits of using distilled water, and the frequency of water changes.

Myth Debunked: Do You Really Need to Change Your CPAP Water?

Many believe that the water in their CPAP machine evaporates and becomes an empty chamber quickly. In reality, this is not entirely true. The water level in the humidifier typically decreases due to moisture being breathed out during sleep.

However, some users prefer to refill the water chamber daily to avoid a dry throat and ensure a more comfortable sleep. This is a personal choice rather than a strict requirement. The myth that the water evaporates instantly is a common misconception.

What Happens If the Water Isn't Changed Regularly?

Let's explore the long-term effects of not changing the water in your CPAP machine:

The minerals present in tap water can form sediment over time, leading to blockages in the humidifier chamber. This buildup can interfere with the function of the CPAP machine and may contribute to discomfort or a dry throat. On the other hand, some users report that they can let the water turn green before changing it, indicating that the water can last longer than a day without issues.

Under certain conditions, leaving the water in the CPAP machine for an extended period can be acceptable, provided it remains clean and free of minerals.

Why Use Distilled Water?

The recommendation to use distilled water in a CPAP machine is due to its purity. Distilled water is free from minerals and contaminants that can lead to:

Calcium build-up in your water chamber, which can affect the performance of your CPAP machine. The risk of sinus infections if the water is not properly maintained.

It is essential to change the water daily and always use distilled water to maintain the effectiveness and hygiene of your CPAP machine.

Expert Advice from CPAP Users

A user suggests that their wife refills the water in the CPAP machine every day or whenever it runs out. She also notes that she doesn't drain any leftover water, maintaining a full chamber. This highlights the importance of consistent water management:

Ensure regular water changes to prevent sediment buildup. Use distilled water to maintain the integrity of the humidifier.

For those who use tap water, it is advisable to change the water more frequently to avoid mineral accumulation and potential health risks.

By following these guidelines, you can ensure that your CPAP machine remains in optimal condition, providing you with a comfortable and effective therapy.

Conclusion: While the water in a CPAP machine does not evaporate quickly, regular maintenance is crucial. Using distilled water and changing it daily can prevent issues such as sediment buildup and ensure a healthier sleep environment.