Mild, fragrance-free dish soap and warm water is all you need to clean your CPAP equipment. No special cleaners, no expensive sanitizing machines. A small drop of gentle liquid dish soap handles the job for your mask, tubing, and water chamber alike.
That said, not every soap is safe for every CPAP component, and there are a few products you should avoid entirely. Here’s what to use, what to skip, and how to do it right.
The Best Soap for CPAP Cleaning
Look for a mild liquid dish soap that’s free of fragrances, moisturizers, and antibacterial additives. Basic, unscented dish soap is the standard recommendation from both manufacturers and sleep medicine organizations. You only need a small amount: a single drop is enough for tubing, and a few drops in a sink of warm water handles the mask and water chamber.
Antibacterial soaps and heavily scented products contain additives that can leave residue on silicone mask cushions. Over time, that residue can degrade the silicone, causing it to harden or lose its seal against your face. Moisturizing hand soaps cause similar problems. Stick with the plainest dish soap you can find.
The water matters too. Use warm water around 86°F (30°C), which is roughly body temperature. Never use boiling water or very hot water, as heat warps and damages silicone and plastic components.
What NOT to Use on Your CPAP
ResMed, one of the largest CPAP manufacturers, explicitly warns against using stronger cleaning products on any CPAP components because residual vapors can be harmful when inhaled. Their list of products to avoid includes dish detergent (the heavier, concentrated kind), bleach, and any harsh chemical cleaners. There’s an important distinction here: “mild liquid detergent” for the mask is fine, but stronger dish detergents can damage air tubing and leave harmful residue inside it.
Other products to avoid:
- Bleach or hydrogen peroxide: too harsh for silicone and plastics, and residue is dangerous to inhale
- Scented soaps or lotions: leave films that break down mask cushions
- Alcohol-based cleaners: dry out and crack silicone over time
- Baby wipes or pre-moistened towelettes: often contain lanolin, aloe, or other coatings
Skip the Ozone and UV Cleaners
If you’ve seen ads for machines that claim to sanitize your CPAP with ozone gas or UV light, know this: the FDA has not cleared or approved any device for cleaning, disinfecting, or sanitizing CPAP machines. None. The FDA has received reports of unexpected asthma attacks, headaches, and breathlessness from people who used ozone-based CPAP cleaners.
The problems go beyond side effects. Ozone gas can leak out of CPAP equipment into your home during the cleaning cycle, and ozone levels inside the hose and mask can remain above safe limits for hours after cleaning is finished. Both ozone and UV light also break down CPAP accessories like hoses and masks, potentially shortening the life of your equipment. Plain soap and water remains the safest, most effective approach.
Daily Cleaning Routine
A quick daily clean prevents bacteria, mold, and oils from building up on the surfaces you breathe through every night. It takes about five minutes.
For your mask cushion, frame, and headgear: fill a sink with warm water and add a few drops of mild dish soap. Gently rub each piece with your hands (no scrub brushes on the silicone), then rinse thoroughly with warm water. Set everything on a clean towel to air dry.
For the water chamber: empty any leftover water each morning. Rinse it out and let it air dry with the lid open. This alone prevents most bacterial and mold growth between deeper weekly cleanings. When you refill it at night, always use distilled water. Tap water leaves mineral deposits on the chamber walls that are harder to clean over time.
Weekly Deep Clean
Once a week, give the tubing, water chamber, and filter a more thorough wash.
Tubing
Plug one end of the tubing with your hand or thumb. Place a single drop of mild soap into the other end, then fill the tube with warm water. Cover both ends and shake the tubing so the soapy water reaches every surface inside. Drain it, then rinse with warm water until no soap bubbles remain. Hang the tubing over a shower rod or towel rack to drip dry completely.
Water Chamber
Fill the chamber with warm soapy water, or use a solution of equal parts white vinegar and water. Let it soak for 20 minutes, then empty and rinse with warm water. A long, narrow brush can help scrub away any mineral buildup on the inside walls. If you prefer the vinegar method for your weekly soak, mix one part distilled white vinegar with three parts warm water. Vinegar is particularly good at breaking down mineral deposits and eliminating odors. Just rinse thoroughly afterward so no vinegar smell lingers.
One important note: never run vinegar through the CPAP machine itself. Only use it on detachable parts like the chamber and tubing.
Filter
Soak the reusable filter in warm, soapy water, then rinse it under warm running water until the soap is gone. Gently blot excess water with a clean towel and let it air dry completely before putting it back in the machine. Disposable filters should simply be replaced on the schedule your manufacturer recommends, typically every 30 days.
Drying Is Just as Important as Washing
Putting damp components back together creates exactly the warm, moist environment where mold and bacteria thrive. After washing, pat each piece with a clean, dry towel, then let everything air dry fully before reassembling. This means cleaning in the morning gives your equipment all day to dry before you need it at bedtime. Set mask parts and tubing in a spot with good airflow, out of direct sunlight (UV from the sun degrades silicone just like UV cleaning machines do).
For the water chamber, leave the lid open while it dries so moisture doesn’t get trapped inside. If you live in a humid climate and find that parts still feel damp by evening, consider keeping a second set of tubing or mask cushions in rotation so you always have a dry set ready.