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Honeywell HUL430B Humidifier Review

Tested using Methodology v1.0
Reviewed Nov 22, 2024 at 08:37 am
Honeywell HUL430B Picture
7.3
Home
7.7
Bedroom
6.0
Cleaning
7.7
Capacity
7.8
Humidifier Efficiency

The Honeywell HUL430B is a cool-misting ultrasonic humidifier intended for small to medium-sized rooms, roughly 300 to 500 ft2. It has a bottom-filling tank with a usable capacity of 4.5L (1.2 gal) and can run for up to nearly 20 hours. It also boasts a tray for adding a few drops of your favorite essential oil.

Our Verdict

7.3 Home

The Honeywell HUL430B is decent for home use. It has a chic, modern appearance, with a compact design that will blend in within most living spaces. Its humidification capacity is also sufficient for fairly large spaces, in spite of being advertised mainly for medium-sized spaces. While it lacks a built-in humidistat, it does at least have an automatic off function, which will turn the unit off once its tank has run dry.

Pros
  • Compact design.

  • Humidification capacity is good. 

  • Auto-off functionality.

Cons
  • No on-board humidistat.

  • Somewhat annoying to clean.

7.7 Bedroom

The Honeywell HUL430B is a good option for use in bedrooms. It's compact, quiet, and has no distracting lights visible through closed eyelids, allowing you to get a good night's rest. Its capacity is also sufficient for even large bedrooms. You can add essential oils to the aromatherapy tray at the back of the unit if you'd prefer a scented mist as well. Its 19-hour max runtime will easily last you through the night if you fill it up, and thankfully, it's equipped with an automatic off function that will turn the humidifier off once its tank has run dry. Unfortunately, it lacks a humidistat to automatically adjust misting levels, and it doesn't come with a remote control either.

Pros
  • Quiet operation.

  • Auto-off functionality.

  • Fairly long runtime.

Cons
  • No on-board humidistat.

  • Somewhat annoying to clean.

6.0 Cleaning

The Honeywell HUL430B is pretty demanding in terms of maintenance. It's fairly easy to take apart for the most part, with the small exception of its fiddly essential oil tray. None of its components are dishwasher safe, and you'll need to be careful when cleaning the base unit to avoid getting water into the rear vents.

Pros
Cons
  • Somewhat annoying to clean.

7.7 Capacity

The Honeywell HUL430B provides good humidification capacity. While advertised for small to medium-sized spaces, it'll efficiently humidify fairly large spaces too, like smaller apartments, bigger living rooms, or college dorms.

Pros
  • Humidification capacity is good. 

Cons
7.8 Humidifier Efficiency

The Honeywell HUL430B is energy-efficient. Its max humidification capacity is pretty impressive for a unit with this low-power draw. That said, like any cool misting unit, it's best used in warmer, drier environments, where its cooling properties can help regulate temperature.

Pros
  • Good efficiency.

Cons
  • 7.3 Home
  • 7.7 Bedroom

Performance Usages

  • 6.0 Cleaning
  • 7.7 Capacity
  • 7.8 Humidifier Efficiency
  1. Updated Nov 22, 2024: Review published.

Differences Between Sizes And Variants

This Honeywell humidifier is only available in two colorways: 'Black,' which is sold as the HUL430B, or 'White,' which is sold as the HUL430W. We tested the 'Black' model, and for those interested, here's the product label.

If you encounter another variant of this unit, let us know in the forums, and we'll update our review.

Compared To Other Humidifiers

The Honeywell HUL430B is a cool-misting ultrasonic humidifier. Compared to the Honeywell HUL545W, another similarly positioned model within the company's lineup, the HUL430B has a more modern appearance but is otherwise similar in terms of performance and features. It has good humidification performance, can be used with essential oils, and has an automatic shutoff for when its tank runs out, but it's worth noting that it's a bit more of a hassle to clean compared to some other units in the same price range.

Test Results

perceptual testing image
Design
8.5
Design
Size
Height 34 cm (13.2")
Width 22 cm (8.7")
Depth 23 cm (9.0")
Power Cord Length 1.95 m (6.4 ft)
6.0
Design
Cleaning
Dishwasher Safe
No

The Honeywell HUL430B is somewhat demanding in terms of maintenance. It comes apart somewhat easily for the most part, with the exception of the essential oil tray, which can be a bit of a nuisance to pull out the back of the unit due to its small grip. When cleaning the base unit, you'll also have to be careful not to get any water into the rear vents.

Design
Features
Type
Ultrasonic
Mist Temperature
Cool
Humidistat
No
Water Sterilization
No
Essential Oil Compatible
Yes
Auto-Off
Yes
Smartphone App
No

Despite its wildly different appearance, the Honeywell HUL430B has a similar set of features to the Honeywell HUL545B. You can adjust the mist level with the front rotary dial. There's a rear tray for adding a few drops of your favorite essential oils. 

The HUL430B is also equipped with an automatic off function, which will turn the unit off once the tank has run dry. Unfortunately, there's no humidistat, and the humidifier won't automatically adjust its misting level depending on desired ambient humidity.

7.6
Design
Runtime
Tank Refill Type
Bottom Fill
Tank Usable Capacity
4.5 L (1.2 gal)
Runtime
19 hrs
Performance
7.7
Performance
Humidification Capacity
Time From 30% To 60%
49 min
Advertised Coverage
499ft²
Water Emitted By The Humidifier
192 ml (6.5 oz)
Water Evaporated By The Environment
161 ml (5.4 oz)
Tested Humidification Capacity
5.6 LPD
7.8
Performance
Humidifier Efficiency
Humidifier Energy Consumption
19 Wh
Humidifier Efficiency
8.5L/kWh

This is an efficient humidifier. It provides good humidification capacity for a unit with this low a power draw. 

8.4
Performance
Overall Efficiency
Energy Required For Evaporation
101 Wh
Overall Energy Required
120 Wh
Overall Efficiency
1.3L/kWh

Overall efficiency is impressive. That said, it's best used in warm and dry environments, where the cooling properties of ultrasonic humidifiers are most helpful. Using this machine in colder, drier environments can make your heating system work a little harder than usual, which could result in a slight bump to your energy bill if you use the unit often.

8.9
Performance
Noise
Noise @ Highest Setting
33.1dBA
Noise @ Lowest Setting
33.1dBA