Quick answer

Replace the aroma pad when the scent fades or the pad looks stiff or discolored, and always add essential oil to the pad tray—not the water tank. The DREO Aroma Pads 24-Pack fits Dreo humidifiers 311, 311S, 512, 713, and 713S.

Why pad placement matters more than oil strength

The aroma pad tray keeps oils separate from the water tank, which prevents malfunctions. Putting oil directly into the water can damage components and may not diffuse evenly. Use the tray every time, even with a strong essential oil.

When a pad is still usable but scent is weak

A pad can still be intact after the fragrance fades. Before replacing it, try adding a few more drops of essential oil and running the humidifier for a short cycle. If the scent returns, keep the pad; if not, swap it. This saves pads and avoids unnecessary waste.

Humidifier aroma pad FAQs

When should I change the aroma pad?

Change it when the scent no longer lasts through a normal humidifier session, or when the pad becomes stiff, discolored, or crusty. If you use essential oils daily, check the pad every two to three weeks. Keep a spare pad on hand so you are not caught without one.

How do I use a DREO aroma pad correctly?

Place the pad in the aroma pad tray, add a few drops of essential oil to the pad, and then fill the water tank as usual. Never drip oil into the water tank itself. Always use the tray—oil in the tank can cause malfunctions.

Which Dreo humidifiers does the 24-pack fit?

The Aroma Pads 24-Pack is compatible with Dreo humidifiers 311, 311S, 512, 713, and 713S. Check your model number before ordering. Compatibility is model-specific; do not assume it fits other Dreo humidifiers.

Can I use any essential oil?

The pads are designed for custom fragrances, so you can add your favorite essential oil. Start with two or three drops and adjust to your preference. More oil does not always mean better diffusion; start small.

How many pads are in a pack and how long does one last?

The 24-pack gives you 24 pads. One pad typically lasts several weeks depending on how often you run the humidifier and how much oil you add. A 24-pack can last months for most households.

Product facts