Steer clear of Craigslist, Facebook Marketplace, and eBay. These sites often prohibit CPAP sales, and machines found there may harbor bacteria, mold, viruses , or even pests like bedbugs.
Reputable sellers must ask for a prescription. If they don't, they are likely operating illegally and bypassing safety standards. buy used cpap
These authorized online retailers specialize in certified pre-owned and refurbished units that have been cleaned and inspected: Is It Safe to Buy a Used CPAP Machine? - Sleep Foundation Steer clear of Craigslist, Facebook Marketplace, and eBay
Only purchase from authorized medical retailers who professionally sanitize, test, and repair devices. Steer clear of Craigslist