If you use CPAP therapy and find yourself getting sick more often than you used to — sore throats, sinus infections, respiratory infections that seem to keep coming back — it’s worth looking at your equipment before assuming something else is going on. CPAP masks, hoses, and humidifier chambers create warm, moist environments that, without regular cleaning, can become a place for bacteria and mold to grow.
Why equipment hygiene matters more than people expect
The CDC and sleep medicine guidance both emphasize that respiratory equipment used overnight, every night, needs consistent cleaning specifically because of how easily moisture-retaining parts can harbor bacteria. The American Academy of Sleep Medicine recommends establishing a regular cleaning routine as a standard part of CPAP care, not an optional extra.
Water source matters
Using tap water in a humidifier chamber, rather than distilled water, is a common but under-discussed contributor to equipment contamination — tap water can contain minerals and microorganisms that distilled water doesn’t. If you’ve had a sputum culture come back positive for a water-associated bacterial strain, as sometimes happens with recurrent respiratory infections in CPAP users, switching to distilled water is one of the most commonly recommended first steps, alongside more frequent chamber cleaning.
A general cleaning routine to ask your equipment supplier about
- Wash the mask cushion and headgear with mild soap and water regularly, per your manufacturer’s instructions.
- Rinse and air-dry the hose regularly, and replace it on the schedule your manufacturer recommends — hoses degrade and can develop micro-tears that are hard to clean fully.
- Empty and refill the humidifier chamber with distilled water daily, and clean the chamber itself on a regular schedule rather than only when it looks visibly dirty.
- Replace filters, cushions, and other consumable parts on the interval your equipment’s documentation specifies.
The Sleep Foundation has a helpful overview of general CPAP cleaning practices, though your durable medical equipment (DME) supplier or sleep physician can give you guidance specific to your exact machine and mask model.
Don’t stop therapy on your own — talk to your care team
Recurrent infections are frustrating, and it’s understandable to want relief immediately. But for most people with diagnosed obstructive sleep apnea, stopping CPAP isn’t a safe substitute for addressing an equipment or hygiene issue, since untreated OSA carries its own health risks. If infections continue despite consistent cleaning and distilled water use, that’s worth bringing to your sleep physician or ENT directly — they may want to look at mask fit, equipment type, or run additional testing. This article is general education and isn’t a substitute for care from your treating physician.
— Gemifys
