Serene House Cosmos Diffuser vs Serene House Nexus Ultrasonic Diffuser

Both are Serene House 90-size ultrasonic diffusers with metal covers and auto shut-off, so the choice comes down to light and finish. The Cosmos is the better pick if you want ambient color: it has 7 rotating LED lights and a white metal cover. The Nexus is the better pick for a modern silver look and a stated coverage area of up to 150 sq ft, and it adds a timer control. Owners of this size class report quiet mist and easy cleaning; the trade-off on both is a small tank that needs refilling on long sessions.

• Choose the Cosmos if you want rotating colored LED light and a white metal finish for a bedroom or living room.
• Choose the Nexus if you want a silver metal look, a timer control and a stated coverage area for a room up to 150 sq ft.