Nothing matches all of those filters.
Ultrasonic humidifiers
Disc units for tents and small rooms
Aqualine Humidifiers for Grow Tents and Grow Rooms
- Type ultrasonic cool mist humidifiers
- Range tank capacities from 2.3 L to 23 L
- Mini One (2.3L) 2.3 L tank, covers up to 1m x 1m x 2m, up to 10 h...
- Midi Mist (4.5L) 4.5 L tank, covers up to 1.2m x 1.2m x 2m, max 28...
Pure Factory Humidifier - 8 Litre Reservoir
- Reservoir capacity 8 litres
- Mist output adjustable up to 350ml/hr
- Run time up to 32 hours per fill
- Technology ultrasonic cool mist
Faran HR-15 Humidifier Complete Kit Analogue
- Power 110V/50Hz or 220V/60Hz
- Humidification capacity 1-500cc/hour
- Feed-water pressure less than 5kg/cm²
- Dimensions 310 x 310 x 470mm
Faran HR-50 Humidifier Complete Kit Analogue
- Power 110V/50Hz or 220V/60Hz
- Power consumption 90W
- Humidification capacity 2,500-4,000cc/hour
- Feed-water pressure less than 5kg/cm²
Mist Maker Humidifier Float for Ultrasonic Disc Humidifiers
- Brand Mist Maker
- Type Humidity
- Options 3 to choose from
- Price from £14.49
- Availability In stock
Out of stock
RAM 5L Ultrasonic Humidifier for Grow Room Humidity Control
- Brand RAM
- Type Humidity
- Price from £39.49
- Availability Out of stock
RAM 13L Ultrasonic Humidifier for Grow Room Humidity
- Brand RAM
- Product type Ultrasonic humidifier
- Tank capacity 13L
- Humidification rate 1100ml per hour
Mist Maker Ultrasonic Humidifier for Grow Rooms
- Type ultrasonic disc mist maker
- 3 disc 1200 ml/h output
- 5 disc 1600 ml/h output
- 12 disc 5300 ml/h output
VIVOSUN AeroStream Ultrasonic Grow Tent Humidifier
- Models AeroStream H05, H09 and H19
- Tank capacities 5 litre (H05), 9 litre (H09), 19 litre (H19)
- Mist type fine ultrasonic mist
- Output control adjustable
SonicAir humidifiers
Reservoir-fed, with output control
G.A.S SonicAir Humidifier Pro
- Maximum output 6.5 litres per hour
- Spout 150mm directional
- Water supply mains intake (no tank)
- Power 300 watts
Sonic Air PRO Humidifier + IHC Pro Dual VPD Controller
- Humidifier G.A.S SonicAir Pro, ultrasonic
- Maximum mist output 6.5 litres per hour
- Power 300W
- Noise level under 35 dB
Sonic Air Humidifier 23L
- Reservoir capacity 23 litres
- Maximum mist output 1.44 litres per hour
- Power consumption 110W
- Fill type Top-fill lid
G.A.S SonicAir Humidifier - 10L
- Reservoir capacity 10 litres
- Vapour output up to 800ml per hour
- Power draw 60W
- Outlets 4 rotatable
Dehumidifiers
Rated in litres pulled out per day
Out of stock
RAM 12L Dehumidifier Grow Room Humidity Control
- Extraction Rate Up to 12 litres per day
- Target Humidity Range 30% to 80% RH
- Tank Capacity 2 litres
- Drainage Internal tank or optional continuous hose drainage
Stealth Garden LGR Master Dehumidifier 90L
- Technology Low Grain Refrigerant (LGR)
- Capacity class 90 litre
- Recommended use flowering rooms and drying/curing spaces
- Suited to mid-to-larger grow rooms rather than small tents
G.A.S. Day & Night Dehumidifier Controller for Tents
- Brand G.A.S.
- Product type Day and night dehumidifier controller
- Control Two dials, daytime (left) and night time (right)
- Function Switches a connected dehumidifier on and off to h...
Aqualine Dehumidifier for Grow Room Humidity Control
- Brand Aqualine
- Type Refrigerant dehumidifier
- Power supply 220-240V / 50Hz
- 12L model 210W, 12L per day, 2L tank, under 46dB, 105 m³/h ...
Ora 60L Grow Room Dehumidifier for Humidity Control
- Extraction Rate 60L / 127 US pints per 24 hours
- Power 650W
- Power Supply AC 230V ±10% / 50Hz / 1P
- Refrigerant R410A
AlorAir Sentinel Dehumidifier for Grow Rooms
- HD55 capacity 53 pints per day at 26°C / 60% RH, up to 113 pint...
- HD55 coverage Up to 111m² (10.5m x 10.5m)
- HD55 airflow 205 m3/h
- HD55 current / COP 4.0 A / 2.27 L per kWh
Dry Bag Disposable Hanging Dehumidifier
- Type disposable hanging (passive) dehumidifier
- Moisture absorption capacity up to 500ml
- Recommended coverage up to 1m2 per bag
- Power none required (passive absorbing compound)
Dry Pot Disposable Room Dehumidifier
- Type disposable passive dehumidifier
- Moisture removal up to 800ml per pot
- Coverage recommended up to 1.2m2
- Active ingredient moisture-absorbing compound
About Humidifiers & Dehumidifiers
Every Humidifiers & Dehumidifiers product we stock is listed on this page, grouped so the staples come first and the spares and accessories sit at the end. Prices include VAT, and stock shown is what is on the shelf.
Free Express Delivery on UK mainland orders over £60, arriving in 1-2 working days. Order by 3pm Mon-Fri. Price match available, and collection from our Wembley shop.
Humidifiers and dehumidifiers for grow tent VPD
Humidity swings more than most growers expect between stages, and getting it wrong in either direction costs you — too dry and cuttings won't root, too wet in flower and you're growing botrytis instead of buds. Target roughly 70–80% RH for seedlings and cuttings, 50–70% through veg, dropping to 40–50% in flower and 35–45% late flower, full detail in our grow tent setup guide.
The Pure Factory 8L humidifier (£44.95) suits a single tent or propagation space that's running dry. Step up to the G.A.S SonicAir 10L (£84.95) or 23L Sonic Air (£164.95) for a bigger room, and the G.A.S SonicAir Pro (£299.95, down from £349.95) if you're running a full grow room that needs sustained output rather than topping up every day. Going the other way, disposable options like the Dry Bag (£6.50) and Dry Pot (£7.50) pull excess moisture out of a small tent without any running cost or power draw.
The mould connection
Humidity above 55% in flower is the mould danger zone, especially once buds start swelling and airflow through the canopy drops. A dehumidifier tackles the air directly; a circulation fan moving air through the canopy tackles the still, damp pockets where botrytis actually starts. See our humidity control range and mould prevention products if you've had issues before. Free UK delivery over £60, or call 020 3488 0419 for help sizing a unit to your room.
