Forum Discussion
Johno02
Jul 26, 2014Explorer
Having used a CPAP for over 20 years, both with and without huidifier, at home and in RV, I really can't see any reason why it used more tap water than distilled water. Could have been temperature, relative humidity, room temperature, or some other factor. Distillation or ionazation has no effect on the evaporation effects of water.
The main reason not to use tap water is the chlorine used to purify it in the city water supply. in some cased(places) the tap water is so loaded you cannot breathe the air that passes over it. Also, if the tapwater is very hard, or has a lot of minerals, they will build up in your CPAP tank and are difficult to get rid of. As the evaporation has already been done to distilled water, it avoids the problem. As to the evaporation thing, if the tap water contained some high percentage of some other volitile liquid, that could account for a part of the difference, but the additional vapors would make it obvious that the water was bad.
The main reason not to use tap water is the chlorine used to purify it in the city water supply. in some cased(places) the tap water is so loaded you cannot breathe the air that passes over it. Also, if the tapwater is very hard, or has a lot of minerals, they will build up in your CPAP tank and are difficult to get rid of. As the evaporation has already been done to distilled water, it avoids the problem. As to the evaporation thing, if the tap water contained some high percentage of some other volitile liquid, that could account for a part of the difference, but the additional vapors would make it obvious that the water was bad.
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