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Black evaporative humidifier with one-gallon tank and single control knob

Sunpentown

Sunpentown SU-4023B 1-Gallon Evaporative Humidifier

SKU CH-AE08-1JCX4 MPN SU-4023B

A 3.7-litre evaporative humidifier with a wick filter that traps minerals, top or tank refill, low-water auto shut-off and single-knob control

  • TypeHumidifier
  • ColorBlack
  • Evaporative cool-air humidification circulates moist air without white dust
  • 1-gallon (3.7 L) tank offers two convenient refill methods
  • Single-knob control simplifies daily operation
  • Low-water indicator triggers automatic shut-off for safety
  • Included wick filter F-4023 traps minerals; replace every three months

Evaporative humidifier for dry rooms

This cool-air evaporative humidifier draws dry air through a moisture-laden wick filter that retains minerals and deposits, then circulates moist air back into the room. It has a 1-gallon (3.7 liters) water tank and two refill methods: top refill or tank removal. Operation uses a single knob and the unit includes an essential oil compartment. A low water indicator triggers automatic shut-off when the tank is empty.

Best for bedrooms and offices needing mineral-free

The wick filter captures minerals so no white dust settles on surfaces, making it suitable for people sensitive to airborne particles. The simple one-knob control suits users who want straightforward humidity adjustment without digital menus. Buyers who need built-in humidity monitoring or a humidistat should look elsewhere, as this model relies on manual setting. It is also not intended for whole-house coverage or large open-plan areas beyond a single room.

1-gallon tank with dual refill options

The 3.7-litre capacity supports extended operation before a refill is required, reducing daily maintenance. You can pour water directly into the top opening or lift the tank out for filling at a sink, whichever is more convenient. The included wick filter is made from advanced wood slurry material with a honeycomb structure for quick absorption and evaporation. Replacement filter F-4023 is available separately and the manufacturer recommends changing it every three months.

Highlights

  • Evaporative cool-air humidification circulates moist air without white dust
  • 1-gallon (3.7 L) tank offers two convenient refill methods
  • Single-knob control simplifies daily operation
  • Low-water indicator triggers automatic shut-off for safety
  • Included wick filter F-4023 traps minerals; replace every three months

Specifications

TypeHumidifier
ColorBlack
Shipping weight3.18 kg
Package size381 × 330 × 279 mm

Questions about this item

How do I install the wick filter in the SU-4023B and what step is often missed?

Remove the water tank and top cover, insert the included wick filter into the base until it sits flat, then replace the cover and tank; the step often missed is ensuring the filter is fully seated so the low-water sensor works correctly.

What maintenance does the SU-4023B need and when should I replace the filter?

Clean the tank and base weekly with mild detergent; replace the F-4023 wick filter every three months or sooner if output drops or the filter shows mineral buildup.

What limit appears first during continuous operation of the SU-4023B?

The 3.7-litre tank empties first, triggering the low-water indicator and auto shut-off; refill via the top opening or by lifting the tank to resume operation.

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