SpaRoom Onyx Ultrasonic Aromatherapy Essential Oil Diffuser
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Our take on the SpaRoom Onyx Ultrasonic Aromatherapy Essential Oil Diffuser
The SpaRoom Onyx is a small ultrasonic essential oil diffuser in a black plastic body, about 4.9 inches wide and 4.6 inches tall. It runs on ultrasonic vibration to put out a cool mist and shuts off automatically when the water runs low. Its compact footprint suits a nightstand, desk or bathroom shelf. It is a basic, budget-tier diffuser rather than a large-room or smart model.
- Automatic shut-off when water runs out
- Compact size fits tight spaces
- Simple one-button operation
- Cool mist, no heat involved
- Low price for a basic diffuser
- Small tank means frequent refills
SpaRoom Onyx Ultrasonic Aromatherapy Essential Oil Diffuser prices at every store
- Office DepotNew
Out of stock
$40.99Free shippingObserved at 1:33 PM
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SpaRoom Onyx Ultrasonic Aromatherapy Essential Oil Diffuser price history
Lowest price we've seen: $40.99 on Nov 7 at Office Depot. Tracked across 1 store since Nov 7.
Questions and answers
- How long does one fill last?
- The Onyx is a small diffuser, so expect a few hours of mist per fill rather than all-night run time. Refill when the mist weakens or the unit shuts off.
- Does it shut off by itself?
- Yes. It has automatic shut-off that cuts the unit when the water level gets too low, so you can leave it running unattended.
- What size room is it for?
- It suits a bedroom, office or bathroom. For a large open living area, a bigger-tank diffuser will cover the space better.
- Does it need distilled water?
- Distilled water is recommended to cut mineral buildup and keep the ultrasonic plate working longer. Tap water works but may need more frequent cleaning.
- Can I use it with any essential oil?
- Yes, it works with standard essential oils and oil blends. Add a few drops to the water, not straight into the tank dry.
- Is it worth it over a larger diffuser?
- If you want mist in one small room at low cost, it is a reasonable pick. If you want long run times or smart controls, spend more on a larger model.
