A typical oxygen concentrator has a life of about 5 years, but an average person uses it for about 30 months only, that is half the life-span of the equipment. If you manage to get a used oxygen concentrator at 30-50% discount why not go for it. All you have to do is buy fresh accessories such as the humidifier bottle and nasal cannula which doesn't cost much, just a few thousand Rupees.
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