FOHERE JS2420 18L Top-Fill Ultrasonic Humidifier

The FOHERE JS2420 is an 18-liter top-fill ultrasonic humidifier listed for rooms up to 1,500 square feet. Its large reservoir, caster wheels, humidity modes and adjustable mist output are aimed at users who want fewer refills and controls for larger spaces, though the stated runtime and coverage are manufacturer claims rather than independently verified results.

At a glance

The top-fill design is described as allowing water to be poured in from above. The listing also describes a removable tank-fill option.
Three ultrasonic atomizers and five adjustable mist levels are claimed, with a stated output of 1300ml/H.
Custom humidity, auto and sleep modes are listed. The description says custom mode allows a target, while auto mode adjusts output based on sensed humidity.
The listing describes a 24-hour timer, a night light and an essential oil tray.
Caster wheels are claimed to help move the unit to a sink for refilling.
The product listing gives a 60-hour maximum runtime and a coverage claim of up to 1,500 square feet. These are not independent performance measurements.

Price

$109.19Save 22%

Reference price: ~~$139.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The 18-liter tank can reduce refill frequency compared with smaller-capacity models, depending on mist setting and conditions.
Top filling and claimed caster wheels offer alternatives to lifting the full reservoir for refills.
Multiple mist levels and humidity modes provide more adjustment than a single-output humidifier.
The included remote control provides a stated control option in addition to touch controls.

Technical specifications

14 specifications

Identity
Brand	FOHERE
Model	JS2420

Capacity and operation
Tank capacity	18 liters
Listed floor area	1500 square_feet
Operation mode	Ultrasonic
Runtime	60 hours
Listed voltage	120 volts
Listed wattage	100 watts

Controls and power
Control method	Touch
Power configuration	Corded Electric

Dimensions and materials
Dimensions (D × W × H)	10.63"D x 10.63"W x 28.15"H
Weight listed	12.8 pounds
Material listed	Acrylonitrile Butadiene Styrene
Color	white

What to know before buying

Listing details to confirm

Several performance and operating details are not fully consistent: the product highlights describe auto mode maintaining 50–70% humidity, while the detailed instructions say it adjusts around 70%. The listed runtime, 1,500-square-foot coverage, 1300ml/H output, quietness and energy-use claims are manufacturer statements without independent confirmation. The listing also warns that a water pump may tick in bedrooms, despite describing sleep mode as quiet. Follow the supplied cleaning guidance, including changing water every three days and cleaning core parts weekly. Mineral residue may occur with tap water, and the listing recommends purified, distilled or cooled boiled water to reduce it.

What’s in the box

Included

Humidifier
Quick start guide
Cleaning brush
Remote control
User manual

Who is it for?

A good fit for

People looking for a high-capacity top-fill humidifier for a larger room or open living area.
Plant owners who want adjustable mist output and a humidity-control mode.
Buyers who prefer mobility aids and remote control alongside a large reservoir.

Less suited to

Buyers who require verified room-coverage, runtime, mist-output or noise measurements.
People who need confirmed silent operation near a bed, given the stated possibility of pump ticking.

FOHERE JS2420 18L Top-Fill Ultrasonic Humidifier · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 24 ratings

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The supplied evidence contains aggregate ratings but no customer-comment summary. The ratings are uniformly five-star in this small reported sample, which is a positive signal but cannot show what customers liked, identify concerns, or establish performance such as coverage or runtime.