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The Morento HY4866-WF ($259.99) is a Wi-Fi enabled smart air purifier designed for large rooms of up to 1,076 square feet. It uses two multi-layer HEPA filters to remove odors and up to 99.97% of airborne pollutants such as dust, smoke, pet dander, and formaldehyde. It supports Amazon Alexa and Google Assistant voice controls and performed well in our air cleaning tests, but it is relatively loud when operating at high speed and could use more smart features. It’s a good budget-friendly air purifier for large spaces, but in this price range, we prefer the Dreo Macro Max S ($239.99), which has a smaller recommended coverage area (up to 432 square feet) but works faster than the Morento HY4866-WF. Design and Features: Two Filters for Large-Room CoverageThe HY4866-WF uses a unique dual-filter design that draws air in from the front and the back of the unit, which, according to Morento, makes it effective for rooms of up to 1,076 square feet. Measuring 17.5 by 13.1 by 7.6 inches (HWD) and weighing 7.9 pounds, it’s fairly compact and lightweight, especially for an air purifier with such a large coverage area. It has a white finish with a gray air output grill on top and a handle on the back panel that makes it easy to move from room to room.
Around back is a sensor that measures the PM2.5 level (particles that are 2.5 microns or less in diameter). Some high-end models feature extra sensors for additional air quality insights, like the Dyson Big & Quiet BP03 ($999.99), which provides real-time readings for PM10 (10 microns or less in diameter), NO2 (formaldehyde), VOCs (Volatile Organic Compounds), and CO2 (carbon dioxide) levels.
(Credit: John R. Delaney)
The top of the purifier holds the air outlet grill and a control panel with buttons for power, fan speed (1 to 4), Auto Mode, an Auto-Off Timer, a Child Lock, and Sleep Mode. In Auto Mode, it will switch fan speeds according to the current air quality, and in Sleep Mode, it will operate at its lowest fan speed. The panel also has a filter reset button that will flash when it’s time to replace the filters. Press and hold this button for five seconds to reset the filter life monitor.
On the front of the purifier is an oval color display that shows the current PM2.5 level and has indicators for filter life and Wi-Fi status. Surrounding the display is an LED ring that glows green when the air quality is good (PM2.5 levels from 0 to 75), yellow when it is moderate (76 to 150), and red when it is bad (greater than 150).The front and back air intake grills can be easily removed to access the three-stage filters that contain True H13 HEPA, activated carbon, and fine mesh elements for filtration. The filters are rated to last up to six months before needing replacement. Replacement filters cost $36.99 for a pack of two and $58.99 for a four-pack. Morento also sells an enhanced filter that adds a layer of electrostatic cotton to catch dust and absorb pet odors and formaldehyde. The enhanced filters go for $41.99 for two and $72.99 for four. The Dreo Macro Max S filter also needs to be replaced about every six months, and replacements cost $49.99. The HY4866-WF has built-in Wi-Fi (2.4GHz) and Bluetooth radios. If you don’t need app and voice control support, Morento sells the HY4866 without smart features for $199.99. Either way, the Morento purifier doesn’t come with a remote, but the smart version we reviewed can be controlled using the Havaworks mobile app for Android and iOS devices as well as Amazon Alexa and Google Assistant voice commands. It does not work with Apple HomeKit or IFTTT applets, and unlike the AiDot WELOV Matter P200 Pro ($199.99), it doesn’t support the Matter smart home interoperability standard. The purifier appears in a panel on the Havaworks app home screen with buttons for power, fan mode, child lock, and the countdown timer. Tap the purifier icon to open a control screen that displays the current PM2.5 reading and the local weather. Oddly, the outdoor air temperature is in Celsius despite my selecting Fahrenheit in Settings.The screen also displays the current fan speed and a five-day history of indoor and outdoor PM2.5 levels. At the bottom of the screen are buttons for power, fan mode, the countdown timer, and settings. Use the settings button to reset the filter life meter, enable the child lock, and create on and off schedules. You don’t get any power usage reports with this device like you do with the AiDot WELOV Matter P200 Pro.
(Credit: Havaworks/PCMag)
Installation and Performance: Average Efficiency Setting up the purifier for first use was easy. I removed the front and back intake covers, removed the plastic bag from both filters, and replaced the filters and covers. I downloaded the Havaworks app, created an account, powered on the purifier, and tapped Add Device on the app’s home screen. The app immediately detected the purifier via Bluetooth, so I tapped Add, entered my Wi-Fi credentials, and gave the device a name to complete the installation.I tested the HY4866-WF’s purification performance by placing it in my 110-square-foot office, where it reported an initial PM2.5 level of 02. I lit a stick of incense and extinguished it after ten minutes. When the display read 200 and showed a red LED ring, I set it to Auto mode, at which time it revved up to high speed and went to work. After three minutes, the HY-4886-WF showed a PM2.5 level of 85 and the LED had changed from red to yellow. At the six-minute mark, the PM2.5 reading was down to 44, and the LED ring was green, and after ten minutes, the PM2.5 level was at 22. The HY4886-WF needed 17 minutes to return to its original PM2.5 level of 02. For comparison, the Dreo Macro Max S took 13 minutes to scrub the air completely, and the AiDot WELOV Matter P200 Pro finished the job in 15 minutes. When running at the lowest fan setting, the HY4866-WF is relatively quiet, but once it revs up to high speed, it gets fairly loud. Using the NIOSH Sound Level Meter app, I recorded a noise level of 30dB with the fan running at low speed and 63dB when set to high speed. It’s not quite as noisy as the AiDot WELOV Matter P200 Pro, which put 35dB at low speed and 65dB at high speed.I created an Alexa routine to have the purifier turn on with the fan speed set to 2 whenever a Tapo TC85 camera detected motion and it worked like a charm, as did my Alexa voice commands to turn the purifier on and off, change fan speeds, and enable the child lock.Verdict: Rock-Bottom Pricing for a Large-Room PurifierThe Morento HY4866-WF is a capable connected air purifier that uses three-stage filtration to cleanse the air of pollutants in rooms of up to 1,076 square feet. Its dual HEPA and carbon filters did a good job of purifying the air in our tests and it had no trouble responding to voice commands and running Alexa routines. At $259.99, it’s a solid value that won’t break the bank, but it only offers PM2.5 readings and can get loud when running at high speed. The Dreo Macro Max S works faster, but if you’re searching for the lowest-price smart air purifier with the largest coverage area, the Morento HY4866-WF fits the bill.
Morento Smart Air Purifier HY4866-WF
Cons
Limited air quality readings
Does not support HomeKit, IFTTT, or Matter
Lacks power usage reports
Noisy at high speed
No remote
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The Bottom Line
The affordable Morento Smart Air Purifier HY4866-WF does a good job of removing pollutants from the air in large spaces using dual HEPA filters, but it gets loud and could use a few more features.
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