CORNWALL Electronics Ultrasonic Air Humidifier 8.5L - 350ml/h

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TypeHumidificateur

Conditionnement8.5L

Dimensions (cm)30x20x35

Surface de culture (m²)1.44

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Points clés

Type : Humidificateur
Conditionnement : 8.5L
Dimensions (cm) : 30x20x35
Surface de culture (m²) : 1.44
Puissance consommée (W) : 25W

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HUMIDIFICATION

Cornwall Electronics 8.5L Ultrasonic Air Humidifier

Humidity control matters as much as your lighting when you grow indoors. With an 8.5 litre tank and 300 to 350 ml per hour of output, this Cornwall Electronics ultrasonic humidifier holds relative humidity steady across up to 1.44 m² for a full night.

Ultrasonic technology built for growers

A piezoelectric membrane vibrates at very high frequency and breaks the water into 1 to 5 micron droplets, which an internal fan spreads through the grow room. No heating element touches the water, so your tent temperature stays stable and your extraction fan is not thrown off balance.

This ultra-fine mist is absorbed almost instantly by the air without wetting foliage or substrate — critical for preventing botrytis in late flowering. Correct humidity keeps stomata open: plants transpire, take up more nutrients and keep photosynthesising at full speed.

Specification	Value
Brand	CORNWALL Electronics
Technology	Ultrasonic (piezoelectric)
Tank capacity	8.5 litres
Humidification output	300 to 350 ml/h
Estimated runtime	15 to 20 hours
Power consumption	25 W
Coverage	up to 1.44 m² (120x120 tent)

8.5 LTank capacity

350 ml/hMax output

25 WPower draw

1.44 m²Coverage

Key strengths of this humidifier

🌫️ Ultra-fine 1-5 micron mist

Absorbed by the air immediately, with no condensation on leaves. Humidity spreads evenly right across the tent.

🔋 Just 25 W

Near-silent operation and under 0.5 kWh over a full night, without adding meaningfully to your electricity bill.

🛡️ Automatic shut-off

The unit switches off the moment the tank runs dry: no dry-running risk for the ceramic cell.

💧 Integrated water filter

It traps part of the limescale, limits white dust and clearly extends the life of the ultrasonic cell.

What humidity should you aim for at each stage?

For cuttings and young seedlings, target 70 to 80% relative humidity; during vegetative growth, 60 to 70%; from the start of flowering, taper down to 40-50% to protect flower density. For maintenance, demineralised water limits white dust: rinse the tank weekly and descale the cell with white vinegar once a month.

8.5 litres of runtime, 350 ml/h and only 25 W: the best capacity-to-consumption ratio in its class for a 1 to 1.44 m² grow tent.

Frequently asked questions

Does this humidifier have a built-in hygrostat?

No, it has no internal humidity sensor and runs continuously at the output you set. For automatic regulation, pair it with an external humidity controller.

How large a grow space can it humidify?

At 300 to 350 ml/h it comfortably covers a tent of up to 1.44 m², meaning a 120x120 cm format. Beyond that, add a second unit.

What is the real runtime on a full tank?

Expect 15 to 20 hours at sustained output and up to 24 hours on the low setting. Filling it in the evening covers the night and the following day.

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Fiche technique — CORNWALL Electronics Ultrasonic Air Humidifier 8.5L - 350ml/h
Marque	CORNWALL Electronics
Type	Humidificateur
Conditionnement	8.5L
Dimensions (cm)	30x20x35
Surface de culture (m²)	1.44
Puissance consommée (W)	25W
Plug & Play
Technologie	Ultrasonique
Tension (V)	220-240
Débit d'humidification (ml/h)	300-350
Hygrostat intégré	Non
Type d'appareil	Humidificateur
Dimensions (mm)	30x20x35 cm
Arrêt automatique	réservoir vide
Durée d'action estimée	15-20h
Capacité réservoir (L)	8.5