RT-Series CPAP Parts & Humidifier Accessories

The RT-Series collection brings together replacement components and accessories that keep your sleep therapy equipment running the way it should. If you rely on a 3B ReSmart machine, small parts wear out over time — and having the correct chamber or accessory on hand makes the difference between uninterrupted, comfortable therapy and a night of dry airways or reduced performance.

A centerpiece of this collection is the RESmart Humidifier Chamber (HUMCAP3B), engineered to fit the 3B ReSmart Series. The humidifier chamber holds the distilled water that warms and moisturizes your air, easing the dryness, nasal irritation, and sore throat that many CPAP users experience — especially in dry climates or during winter months. Because chambers can develop mineral buildup, cracks, or cloudiness with regular use, most manufacturers recommend replacing them every six months to a year to protect both air quality and the machine itself. Choosing the exact model-matched chamber ensures a proper seal and prevents leaks that undercut humidification.

When shopping for RT-Series parts, the single most important thing is matching the component to your device model. Accessories built for one ReSmart series won't always seat correctly in another, so confirm your machine's model before ordering. Genuine, spec-matched parts also help preserve any warranty coverage and maintain the pressure accuracy your prescribed therapy depends on.

If your equipment falls under a different product line, browse related replacement parts in our 3 Series, 10 Series, and 100 Series collections to find the exact fit for your machine.