The real reason you are not supposed to use tap water is that fresh tapwater has chlorine in it and if, like me, you fill your machine just before retiring for the evening the first thing to evaporate out of the water is the chlorine. Some people have had nasty turns from chlorine actually poisoning them, best bet is to fill in the AM and allow to stand till bed time or use cooled boiled water, Distilled or deionised water is really expensive if you use a litre every 2 or 3 days.... Vinegar will remove any "limey" deposits in the water tank, but rinse throughly before use.
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Don't take life too seriously.... No one gets out alive
KIA Sorento CRDi EX ( Ebony black) with 5 hex chrome plated tire air valve covers, Coramal Sunsheild, Elcheapo GPS, First Aid Kit, full KIA toolkit & Yellow lenses on the Foglights......
Another reason for using a silver/activated charcoal filter.
The tea and coffee taste so much better too.
Do they remove the chlorine? I have a HUMUNGOUS filter on the outside wall of this new house and it's plumbed through to the kitchen yes tea & coffee does taste better.
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Don't take life too seriously.... No one gets out alive
KIA Sorento CRDi EX ( Ebony black) with 5 hex chrome plated tire air valve covers, Coramal Sunsheild, Elcheapo GPS, First Aid Kit, full KIA toolkit & Yellow lenses on the Foglights......
My husband uses a CPAP machine too, but his doesn't have a humidifier. If it did, we would only use filtered water in it. We have one of those bench top water coolers in the kitchen, and originally bought it when wayward leaves in the strainer over the rain water tank released tannins into the water. Rather than lose a whole tank of rainwater, we invested in a cooler with a ceramic filter. You can get the coolers in all different sizes and the ceramic filters do a top job. When caravanning, we have a filter attached to our water supply in the van.