Meross's smart essential oil diffuser seeks to allow you to add a pleasant aroma to the air using any essential oil of your choice and increase a room's humidity to counteract dry air, with HomeKit support for control and automations.

meross smart oil diffuser
Meross offers a wide range of HomeKit-compatible smart home devices, including garage door openers, lighting, power strips, air purifiers, and more. Compared to its direct competitors, Meross's smart home products are among the most affordable HomeKit-compatible devices on the market and set themselves apart with no need for a hub or third-party app.

Setup

Meross's smart home devices differ from many other brands in the same space, such as Philips Hue smart lighting, because they do not require a hub or third-party app. In theory, you need only open the Home app on your iPhone, tap Add Accessory, and scan the code on the device to add the device, allowing you to control and automate it from the Home app thereafter. Accumulatively, this significantly eases the setup process compared to the clunky hubs and apps that many other smart home brands demand.

While this is the ideal scenario for most smart home accessories, I sometimes have problems setting up Meross's devices on my network, where they repeatedly fail to connect with the Home app. Some users may need to temporarily disable their router's firewall and the 5GHz portion of their network during pairing to get around these potential problems. This may not be necessary in your case, and Meross's setup experience is generally good, but prospective customers should be prepared to troubleshoot their network in the event of any issues. It is also worth noting that Apple does not directly support essential oil diffusers in the Home app, so the device is simply set up as a humidifier.

To add essential oil to the diffuser, lift off the top section, which reveals a large, 400ml liquid reservoir. Meross recommends using the included measuring cup to add the correct amount of water along with one or two drops of essential oil, before putting the lid back in place. All of this is explained further in an instruction booklet that came with the diffuser.

meross smart oil diffuser open
Once the oil diffuser is set up, it has good responsiveness and provides a reliable connection to the Home app, being quick to respond to commands and working well with automations. Like Meross's other devices, the diffuser works over 2.4GHz Wi-Fi only. With no hub, Meross's ‌HomeKit‌ accessories can be slow or refuse to reconnect to the network when Wi-Fi is temporarily unavailable, but this is a random occurrence and cycling power seems to fix the problem.

Daily Use

The smart oil diffuser features a faux wood finish. I am not a fan of the look and would have preferred a more neutral and premium-looking option that could better fit in a variety of spaces, but I'm sure that it could look okay in some interiors. The diffuser is also possibly a little bit too large for my taste, and its design might make it more obtrusive than it needs to be, but Meross now offer a more compact version of the oil diffuser in a range of finishes to address these concerns.

There are buttons to control the diffuser and the LED ring, which runs around the circumference of the diffuser and adds a gentle accent light. By default, it cycles through colors. For a more subdued look, you can easily set a particular color or brightness to meet your preferences – but it is important to note that this is not a lighting product. Powered by just a few LEDs in the base, the lighting is subtle and needs to be in a dimly lit room to be clearly visible.

Even then, colors are not always accurately reproduced from the Home app on the diffuser, so it can take a while to find your preferred hue. This is fairly normal for low-cost LED smart lighting, particularly for shades such as green and purple. I also find the lighting to be fairly slow to respond once a change as been initiated in the Home app, but these minor issues did not bother me since the lights are only an accent and clearly not the accessory's main purpose.

meross smart oil diffuser buttons
When activated, the diffuser quickly blows water vapor out of the top. It is quiet when running and only emits a soft trickling noise. Water in the reservoir should last for a considerable amount of time, with seven and a half hours of heavy spray or ten hours of light spray. Choosing between these modes also allows you to select how strong you want the scent to be in a room.

The diffuser is surprisingly dynamic when it comes to ‌HomeKit‌, offering multiple controls for both the spray and the LED light. There is plenty of potential for automation, such as setting the target humidity of another sensor accessory and automating the diffuser to come on to reach that threshold, or having the diffuser activate for a brief period when arriving home. Apple would need to add proper diffuser support for more granular controls.

That being said, I feel that the diffuser has some problems. The top does not lock onto the base, which poses a high risk of spillage if you happen to knock the diffuser. Water is blown up inside the lid, so taking it off during operation is likely to result in splashes.

Meross recommends cleaning out the reservoir every few days. Since the water tray does not lift out, you need to disconnect the power cable to clean the accessory. If the diffuser still has any water left in it, this can be difficult and feels needlessly dangerous. The power cable is recessed and pushed in deeply on the underside of the device. This means you have to lift up the water-filled container sufficiently to gently pull out the power cable, which itself is stiff, requiring force that risks further spillage, and frequently causes sparks.

meross smart oil diffuser bottom cable
Users may be better off keeping the diffuser on until the water reservoir is empty if possible, but even then care will need to be taken to not get the power connector wet, and I strongly encourage anyone buying this device to disconnect the power adapter from the wall before trying to remove the power cable.

Since the water tray is fixed to the base that contains all of the electronic components, cleaning is also somewhat inconvenient and I was cautious to not get water in the power socket or in the vents. A connection for the power cable on the back of the device would have made this entire process feel much less perilous, but a removable water reservoir that you could lift out of the device would clearly be a much better solution.

The Bottom Line

Meross's smart essential oil diffuser is a good addition to any smart home setup, enabling a surprisingly wide range of automations. The accessory works well, bringing a straightforward way to emit a scent via the Home app, and the accent lighting is a nice bonus touch to work into scenes.

I would have preferred a more minimal design, but the company now offers a more compact version of the diffuser with multiple finish option that some users may prefer. The biggest problem for me is cleaning the diffuser and disconnecting it from power, which seems borderline dangerous, especially when the reservoir has any liquid left in it, but other than that my experience with the device has been good.

How to Buy

In the U.S., Meross's range of devices are available the company's official website:

MacRumors readers can get seven percent off all Meross devices from the official online store with the code MacRumors at checkout. The Smart Wi-Fi Essential Oil Diffuser is also available for a total of $22 off on Amazon thanks to a $10 reduction and a $12 on-page coupon on.

Note: MacRumors is an affiliate partner of Meross. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. Meross provided MacRumors with a Smart Wi-Fi Essential Oil Diffuser for the purpose of this review. No other compensation was received.

Tag: Meross

Top Rated Comments

a.phoenicis Avatar
16 months ago

This means you have to lift up the water-filled container sufficiently to gently pull out the power cable, which itself is stiff, requiring force that risks further spillage, and frequently causes sparks.
??

So… s**t industrial design, then. Got it.

Also what good is a “smart” scent diffuser that you have to refill daily and clean every few days? That’s a lot of hands-on tending for a device whose primary selling point is remote operation… ?

(Also, pretty ugly, IMHO)
Score: 13 Votes (Like | Disagree)
MrTemple Avatar
16 months ago
⚠️ WARNING: These oil diffusers are SUPER toxic to cats. ⚠️

https://www.petpoisonhelpline.com/blog/essential-oils-cats/



Attachment Image
Score: 12 Votes (Like | Disagree)
RAS2MR Avatar
16 months ago
HomeKit integration aside, I really wonder if all these oil diffusers are really a good thing given their ability to get very fine oily air particles into the lungs...
Score: 7 Votes (Like | Disagree)
legacyb4 Avatar
16 months ago
"Hey Siri, someone farted" is clearly the trigger command to use.
Score: 7 Votes (Like | Disagree)
Vjosullivan Avatar
16 months ago
Because we all need more oil in the air of our air-tight, air-conditioned houses.
Score: 6 Votes (Like | Disagree)
adrianlondon Avatar
16 months ago

Nice butt plug :p:p
Adding homekit to sex toys would be much more useful.

A homekit diffuser? The entire point of a diffuser is that it just gently, and all day, diffuses. It doesn't need anything connecting to it.

"Why does your house smell so bad?"
"WiFi is down"
Score: 6 Votes (Like | Disagree)

Popular Stories

Multi Display CarPlay 1

All-New Apple CarPlay Launching Later This Year With These 5 New Features

Friday September 29, 2023 11:29 am PDT by
At WWDC 2022 last year, Apple previewed the next generation of CarPlay, promising deeper integration with vehicle functions like A/C and FM radio, support for multiple displays across the dashboard, personalization options, and more. Apple said the first vehicles with support for the next-generation CarPlay experience would be announced in late 2023, but it has still not shared any additional...
BMW Logo iPhone 15 Pro

Warning: BMW Wireless Charging May Break iPhone 15's Apple Pay Chip

Sunday October 1, 2023 6:14 am PDT by
If you have an iPhone 15 and drive a BMW, it might be best to avoid charging the device with the vehicle's wireless charging pad for now. Over the past week, some BMW owners have complained that their iPhone 15's NFC chip no longer works after charging the device with their vehicle's wireless charging pad, according to comments shared on the MacRumors Forums and X, formerly known as Twitter. ...
iPhone 15 Pro lineup

Apple to Address iPhone 15 Pro Overheating Issue With iOS 17 Update

Saturday September 30, 2023 9:28 am PDT by
Apple plans to release an iOS 17 update to address a bug that may contribute to the reported iPhone 15 Pro and iPhone 15 Pro Max overheating issue, according to a statement the company shared today with MacRumors and Forbes reporter David Phelan. Apple also says some recent updates to third-party apps have overloaded the system and contributed to the overheating issue. The report notes that...
iphone se 4 modified flag edges

iPhone SE 4 Details: Action Button, USB-C Port, Face ID, and More

Wednesday September 27, 2023 1:34 pm PDT by
Significant changes are expected to arrive with Apple's fourth-generation iPhone SE, in terms of both design and hardware, MacRumors has learned. The iPhone SE 4, known internally under the codename Ghost, is expected to receive a new design derived almost entirely from the base model iPhone 14. According to our sources, the iPhone SE 4 will use a modified version of the iPhone 14 chassis...
iPhone 16 Side Feature

iPhone 16 and 16 Pro: Preliminary Weights and Dimensions

Friday September 29, 2023 12:34 pm PDT by
MacRumors has obtained preliminary information on the weights and dimensions planned for the iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max. The information corroborates previous reports suggesting that the iPhone 16 Pro and 16 Pro Max will feature larger displays. iPhone 16 and 16 Plus Current information suggests that the iPhone 16 and 16 Plus will maintain the same...
uk bank account apple wallet 2

Apple Wallet's New Bank Account Feature Likely to Expand to U.S.

Friday September 29, 2023 8:11 pm PDT by
Starting with the iOS 17.1 beta released this week, iPhone users in the U.K. can add debit and credit cards from select banks in the country to the Wallet app and view their available balances and latest transactions for those accounts. Apple calls this feature Connected Cards, and it's currently available in the U.K. only, but there is now evidence to suggest it will expand to the U.S. in...
iPhone 15 Pro Cameras

Apple Says iPhone 15 Pro's Titanium Frame Does Not Contribute to Overheating Issue

Saturday September 30, 2023 11:10 am PDT by
Apple today said it plans to release an iOS 17 software update with a bug fix for the iPhone 15 Pro and iPhone 15 Pro Max overheating issue, and the company has since shared additional details about the matter with MacRumors. Importantly, Apple said the issue is not related to the titanium frame. Contrary to a report this week, Apple said the iPhone 15 Pro's design does not contribute to...