The Sejoy ASN-13 is an ultrasonic humidifier meant for medium to large spaces, with an advertised coverage of 500 ft2. It's equipped with a humidistat, allowing it to adjust its misting intensity depending on your desired level of ambient moisture. An included remote control allows you to operate the unit without having to get up.
Our Verdict
The Sejoy ASN-13 is decent for home use. Its humidification capacity is sufficient for pretty large spaces, like living rooms or bigger offices. Its 32-hour runtime and built-in humidity sensor also mean that it'll require minimal monitoring over the course of a day. On the downside, it's a little tricky to clean properly, which can be a nuisance if you run the unit frequently.
Pretty substantial humidification capacity.
Built-in humidistat.
Long runtime.
Difficult to properly clean.
The Sejoy ASN-13 is a good option for use in bedrooms. While it's rather tall, its actual footprint isn't all that big, so you can set it up in a tighter corner of your room. Its humidification capacity is also sufficient for larger bedrooms. It runs quietly, too, so it won't keep you up overnight. Its 32-hour runtime, auto-off function, and on-board humidistat allow for hands-off operation and ensure you won't have to wake up in the middle of the night to make adjustments.
Pretty substantial humidification capacity.
Quiet operation.
Built-in humidistat.
Long runtime.
Difficult to properly clean.
The Sejoy ASN-13 has demanding cleaning requirements. There are a few parts that do need to be cleaned, but none are dishwasher-safe. The tank's tall, narrow shape makes it difficult to reach the very bottom, too. The cleaning instructions are also a little vague.
Difficult to properly clean.
The Sejoy ASN-13 provides a good level of humidification capacity. It's well-suited to use in larger bedrooms, offices, or even smaller apartments.
Pretty substantial humidification capacity.
The Sejoy ASN-13 is pretty efficient. As a cool-mist ultrasonic unit, its moisture output is relatively high relative to its consumption.
Good humidifier efficiency.
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Differences Between Sizes And Variants
The Sejoy ASN-13 is available in two colors: 'Black' and 'White.' We tested the 'Black' model, and for those interested, here's the product label.
If you come across a different variant of this humidifier, let us know in the comments so that we can update our review.
Compared To Other Humidifiers
The Sejoy ASN-13 is an ultrasonic humidifier with a tower-like form factor. This gives it a relatively small footprint but also makes cleaning every recess in its water tank a bit of a nuisance. Its humidification capacity is good, if a little less than alternatives like the Levoit LV600S. On the upside, its built-in humidistat, automatic off function, and remarkably long 30-hour plus max runtime still allow for a nearly complete hands-off user experience.
Test Results
For the sake of comparability, all in-test images of humidifiers are taken from the same angle and distance. In the case of larger humidifiers such as this, not every aspect of the device will be visible from this perspective. For those interested, you can see a wider-angle shot of the humidifier to see it in full.
The Sejoy ASN-13 is a bit of a nuisance to clean. There are only five parts that need to be cleaned, but none are dishwasher-safe. Documentation on how to clean the humidifier is pretty sparse; there are no instructions concerning how to clean the motor or mist tube and how often this should be done. The tank's tall, narrow shape makes it difficult to reach the very bottom, which could lead to mineral buildup over time. There are exposed electrical connectors you'll have to work around within the tank as well.
This is a pretty feature-rich humidifier. The ASN-13 is equipped with a humidistat that allows it to adjust its mist level or even turn off to reach and maintain your desired ambient humidity level.
It also has a UV light water sterilization system to inhibit mold and bacterial buildup within the tank.
You can also add essential oil to the tray at the back of the unit and rotate the nozzle on top to orient the mist in whatever direction you'd like.
While it doesn't have Wi-Fi connectivity, you can control the unit with a remote control.
It's worth noting that air bubbles can accumulate within the tube that links the tank to the humidifier system, preventing the ASN-13 from operating properly. On first-time setup, you may have to unseat the tube and prime the unit to clear out any air bubbles.
This is an ultrasonic unit with power consumption comparable to many other units. Running it for prolonged periods is unlikely to have a significant impact on your energy consumption.
This humidifier's overall efficiency is great. If you use this machine in cooler, drier months, your heating system might have to work a little harder to maintain a comfortable temperature, but not by that significant a margin.
