Philips DreamStation 2 Water Tank with Lid

The DreamStation 2 water tank is the clear polycarbonate chamber that holds and heats water for humidified therapy, sealed shut by the dark gray lid. Fill it to the marked line and it holds 325 milliliters, generally enough for a full night.

This listing is the complete assembly, tank and lid together, not the lid sold on its own. It fits every DreamStation 2 Auto CPAP and BiPAP machine, and is dishwasher safe on the top rack once a week.

Key Features:

• 325 mL capacity: Fill to the marked line and the tank holds 325 milliliters, generally enough for a full night.
• Complete assembly: Ships as the full tank and lid together, not the lid sold on its own.
• Dishwasher safe: This tank is dishwasher safe on the top rack, once a week, for easy routine upkeep.
• Clear polycarbonate body: See the water level at a glance through the clear tank body before you fill it each night.
• Fits every DS2 model: One tank size fits every DreamStation 2 Auto CPAP and BiPAP machine on the market.
• Seals in the heat: The dark gray lid closes the tank tight, keeping heated water vapor moving toward the tube.

A tank that has turned cloudy, developed a crack, or stopped holding a tight seal is worth replacing outright rather than working around, since a compromised chamber affects how much moisture actually reaches you overnight. Philips sets no fixed replacement age for this part.

Note: This is the complete tank and lid together. If only the lid has cracked or stopped sealing, a separate lid-only listing covers that repair instead.

What ships in this listing

This is the complete DreamStation 2 water chamber, the clear polycarbonate tank, its seal, and the dark gray lid, sold as one assembled piece rather than as separate parts.

A lid-only replacement exists as its own listing for when just the cover has failed and the tank itself is still sound.

Why tanks get replaced

Mineral deposits and repeated heating cycles gradually cloud the clear plastic and can compromise the seal where the lid meets the tank, both signs of ordinary wear rather than a defect.

Philips sets no fixed lifespan for the chamber, so the practical signal is condition: cloudiness, cracking, or a seal that no longer holds water without dripping.

Keeping it clear between replacements

A run through the dishwasher's top rack once a week, or a daily hand wash instead, keeps mineral buildup from clouding the tank ahead of schedule.

Letting it air dry fully before reinstalling keeps water from sitting inside the sealed unit between uses, which is what most often shortens a tank's working life.

Here's everything that comes in the box.

• One DreamStation 2 water tank with lid