Morento MR5866 smart air purifier review

If you type "air purifier" in Amazon's search bar, chances are you will see the Morento MR5866 Smart Air Purifier as one of your top choices. This unassuming appliance has gathered hundreds of positive reviews and it is often on sale, at times costing as little as $79.99. It sounds like a great budget-friendly alternative to some of the best air purifiers — but does the Morento MR5866 offer good value for money?

Its specifications are impressive for the price. The Morento MR5866 features three different air filters, two air inlets and coverage of up to 1,290 square feet (120 square meters). Plus, it comes with a dedicated app, voice control and an air quality monitor, and it can be connected to Amazon Alexa and Google Assistant.

This air purifier is slightly more advanced than the Morento HY4866 Air Purifier, a model we rated at a solid 4 out of 5 stars about a year ago, so our expectations were high.

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Morento MR5866 Smart Air Purifier review

Morento MR5866 Smart Air Purifier: Design

• Light, compact and portable
• Boxy, dull-looking design
• Available in three colors

The Morento MR5866 Smart Air Purifier is available in three colors: white, gray and black. Our testing unit came in white, which is perhaps why its appearance did not score highly in our books. We were also somewhat underwhelmed by its chunky shape. True, this inoffensively basic design may blend in with various home decors easily, but it lacks the uniqueness and character of some of the more premium models. If style is high on your priority list, the Morento MR5866 may not be the best choice for you.

Looks aside, it is quite a well-designed air purifier. The Morento MR5866 weighs just 9.92 pounds (4.5 kg) and comes with a small handle at the back of the unit, so it is easy to move around even with one hand. It is also very compact. This air purifier measures only 17.7 inches (45 cm) in height and 13.6 inches (34.5 cm) in width, making it a good option for desktops and tight spaces.

Unlike most air purifiers, the Morento MR5866 has not one but two air inlets, one at the front and the other at the back of the unit. This means it requires two sets of air filters, each consisting of a pre-filter that captures hair, dust and other large particles, a HEPA filter that traps airborne pollutants as small as 0.3 microns, and an activated carbon filter that helps reduce bad smells and VOCs (volatile organic compounds.)

While this dual-layer design may sound expensive to maintain, that is fortunately not the case. On the contrary, a two-pack of filter replacements costs a very reasonable $23.99 — much cheaper than similar filter replacements from other air purifier brands. In that regard, the Morento MR5866 offers excellent value for the budget-conscious.

Morento MR5866 Smart Air Purifier: Features

• Three fan speeds, auto mode and sleep mode
• Compatible with Amazon Alexa and Google Assistant
• Limited air-quality monitoring

The Morento MR5866 air purifier can be controlled manually using a small touchscreen located at the top of the unit, or remotely via the Havaworks app. Plus, it can be connected to Amazon Alexa and Google Assistant, so it also comes with voice control. In terms of smart features, this air purifier lived up to our expectations. Our Morento MR5866 swiftly connected to third-party devices and we did not experience any connectivity issues during testing.

The Morento MR5866 has three manually adjusted fan speeds, an auto mode, sleep mode and timer, so you can schedule its working hours in advance and leave it to regulate its fan speed based on air quality readings. This air purifier features a built-in air quality monitor and its measurements are displayed in the app and on the unit's control panel.

However, the Morento MR5866 can only track airborne particles that measure at least 2.5 microns. While this accounts for many common pollutants like dust, pollen and some mold spores, it does not include any smaller particles, of which there are plenty in the indoor air — the aforementioned VOCs, for example. We were also disappointed that the Morento MR5866 shows only real-time air quality measurements, meaning we could not track changes over time.

Morento MR5866 Smart Air Purifier: Performance

• Good air-cleaning performance
• Quiet even at high fan speeds
• Fans take time to get up to speed

On the whole, the Morento MR5866 air purifier delivers good performance for the price. However, we think it is better suited to small- and medium-sized rooms than large spaces, for which it is often advertised. This air purifier takes a full hour to filter out the air in a room measuring 1,290 square feet (120 square meters), but only 12 minutes in a room that is only 219 square feet (20 square meters). This corresponds with our experience — the Morento MR5866 made a tangible difference to the air quality in our relatively small bedroom, but its effects were less noticeable in larger spaces.

To fully assess its air-cleaning capabilities, we conducted a series of performance tests using a Perfect Prime air particle monitor, a professional device capable of detecting airborne pollutants as small as 0.3 microns. We started with an ambient air quality test: We put the Morento MR5866 in an enclosed medium-sized room, measured baseline air quality and then ran it on auto mode for 30 minutes. It removed 87.8% of 0.3-micron particles, 91% of particles measuring 2.5 microns and all pollutants larger than 10 microns. These numbers are not too impressive — other air purifiers in this price range can deliver better results.

That said, the Morento MR5866 managed to redeem itself during our smoke tests. We burned matches and incense sticks to create different types of heavy pollution, then measured the changes in air quality before and after running the air purifier for 30 minutes. We conducted several tests on the maximum fan speed and auto settings, and on average, the Morento MR5866 achieved an 86% reduction in 0.3-micron particles, a 97% reduction in 2.5-micron particles, and a 99.5% decrease in particles measuring 10 microns or more. While it is not the most powerful air purifier we tested, it still delivers a good air-cleaning performance for the price.

We also liked how quiet it was. We measured how loud the Morento MR5866 was at different fan speeds using a Sound Meter decibel-counting app, and we did not get a measurement higher than 58 dB — equivalent to the sound of a quiet conversation. At its lowest fan speed, we could barely hear it working.

Our only grumble about this air purifier is that it has underpowered fans. When switching between different settings, they take quite a long time to get up to target speed. For example, it can take more than 15 seconds for the Morento MR5866 to switch from the lowest fan speed to the fastest. For comparison, more premium models can do that in as little as five seconds. This delay could be reducing its overall performance.

Morento MR5866 Smart Air Purifier: User reviews

Amazon's customer reviews place the Morento MR5866 at a 4.5 out of 5 stars rating, with 79% of users giving it a full five stars. Positive reviews praised this air purifier for its compact design, quiet fans, wide app compatibility, ease of use and good value for money.

As one happy user commented: "I’m very satisfied with this air purifier’s performance. While it truly shines in smaller rooms, it still makes a noticeable difference in larger spaces, helping to improve overall air quality. [...] The noise level is low on standard settings, and while higher speeds are slightly louder, it’s definitely nothing that would keep you awake. And if you are very sensitive to sound, it has a “night mode” which is almost impossible to hear, it makes the operation quiet enough that I sometimes have forgotten it was even on. [...] For the price, it’s a fantastic option that I’d wholeheartedly recommend!"

Negative reviews, on the other hand, often revolved around individual faulty units and network-related app issues that render the air purifier "unusable." As one user said, "As far as an air purifier, it does a good job. The issue is, it continuously shuts off by itself, it beeps intermittently and changes settings by itself. It is frustrating having to keep turning it on. The instructions blame it on other signals over the wireless network."

Should you buy the Morento MR5866 Smart Air Purifier?

✅ Buy it if: You are looking for a smart air purifier on a tight budget. For as little as $79.99, the Morento MR5866 does a good job of trapping airborne pollutants without being too noisy or taking up much space. Plus, it connects to a range of smart home apps and does not require costly filter replacements.

❌ Don't buy it if: You want cutting-edge performance and advanced air quality monitoring. The Morento MR5866 will not help you identify the sources of air pollution in your home, and its air-cleaning capabilities fall slightly behind some of the more premium models.

If Morento MR5866 Smart Air Purifier isn't for you

The BlueAir Blue Pure 411i Max is a great alternative to the Morento MR5866. It is just as quiet, compact and affordable, and it comes with a similar array of smart features, but it looks more stylish and offers more powerful air-cleaning capabilities.

If you would rather stick with the same brand, consider the Morento Air Purifier HY4866. Its looks and performance closely match the Morento MR5866, but it tends to be cheaper by around $50.

Looking for something bigger and more powerful? Then you can't go wrong with the Levoit Core 600S. It is one of the best air purifiers on the market for functionality and air-cleaning performance, but it will set you back by around $299.99.

Morento MR5866 Smart Air Purifier: How we tested

We spent over two weeks testing the Morento MR5866 Smart Air Purifier, looking at its design, functionality, day-to-day performance, ease of use and value for money. We also measured how loud it was using a Sound Meter decibel-counting app and conducted a series of performance tests using a Perfect Prime air particle monitor, a professional-grade device that can detect airborne pollutants as small as 0.3 microns.

We started with an ambient air quality test: we put the Morento MR5866 Smart Air Purifier in an enclosed, medium-sized room and ran it on auto mode for 30 minutes, taking note of air quality changes every 15 minutes.

Next, we performed several smoke tests. We burned matches and incense sticks to create different types of heavy pollution, then measured the air quality before and after running the air purifier for 30 minutes. The smoke tests were conducted on auto settings and at the highest fan speed.