why use distilled water in cpap machine

Dear Andre,
The CPAP manual or the therapist says to use distilled water in the humidifier as it is free of minerals. This will prolong the life of the humidifier and prevent mineral buildup on the inside of the chamber making it appear dirty. Demineralized water is the water that has been stripped of its minerals in every method that exists today. So, one method is distillation, and other known methods are: electro dialysis, deionization, membrane filtration. I repeat, demineralized water is the term for the water without minerals, and distilled water is the water stripped of its minerals through the distillation method - when the water has been boiled off and recollected from steam. Bottom line. there is no big difference between a distilled water and demineralized water, at least not it the finished product. You can try the demineralized water for your CPAP humidifier, and if you don't have it now, you can use tap water (don't use tap water more that once a week). If you use tap water often, you will see a hard crud film on the bottom of your CPAP humidifier. If you do get mineral buildup in the humidifier chamber you should be able to clean it with a white vinegar and water solution to dissolve the minerals.


A much better method that tap water (if you can't find distilled or demineralized water) is to filter the water and boil it. The filter would remove most of the minerals and chlorine and some other particles, and boiling would take care of the microbial concerns. This method is not perfect as the distillation process, which makes the water truly pure, but it might work pretty well. And the last advice for you - whether you use tap or distilled water - is to dump your CPAP humidifier water every morning. Bacteria can build up in humidifiers if the water is not dumped frequently. I hope it helps. Don't be afraid to comment back. Founder of Sleep Apnea Guide CPAP CPAP unit should be placed approximately two (2) feet off the floor, sitting on a small shelf or stool. The CPAP unit should never be placed at the same height as the bed. Wipe CPAP unit down at least weekly and remove any dust from filters. The part of the mask/nasal pillows that come in contact with the patient should be wiped down daily with warm soapy water.


The shell of the mask and the headgear should be washed weekly with warm soapy water. If your room is on the cool side, you may want to place the CPAP tubing under the covers to help prevent rainout from occurring and having the unit БspitБ water at your nose, and to prevent water from gurgling in the tubing. Humidifier The humidifier setting should be set at a comfortable level (usually a setting of 2). If you experience a dry nose, runny nose, nose bleeds then you should increase the humidifier setting to a setting that resolves this issue. Empty the humidifier daily and fill the reservoir with new fresh distilled water. If distilled water is not available, use purified water. If purified water is not available, use bottled water. Only use tap water as a last resort. (Tap water causes calcium and lime build up). Once a week rinse out the reservoir with warm soapy water. The reservoir can be replaced every 6 months. Filter Change/clean filter per your DME provider. Mask and tubing should be cleaned weekly in warm soapy water with a small amount of vinegar.


Rinse mask and tubing well to remove vinegar odor. Let all items air dry. Hose Once a week clean out the hose with warm soapy water. You can dry your hose by attaching the hose and turning on your CPAP unit. Mask/nasal pillow/headgear The part of the mask/nasal pillows that comes in contact with you should be wiped down daily with warm soapy water. The shell of the mask and the headgear should be washed weekly with warm soapy water. You can use a 1:3 solution of white vinegar and warm water for a good cleaning of the mask. Bleach should not be used. The CPAP mask and headgear, depending on the type of insurance, can be replaced every 3-6 months. Traveling Always make sure the humidifier is empty when traveling. When flying, always carry your CPAP with you, NEVER check it as baggage on airlines. You will have to remove the CPAP unit so that it can be tested by the TSA. Always make sure you have your mask and tubing with you. You will need appropriate plug adapters when traveling outside the United States.

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