

Dehumidifier 40L/Day with 5 Modes and 2 Speed
A 40 L/day home dehumidifier with 5 modes, 2 fan speeds, a 6.5 L tank and child lock for spaces up to 35 m².
● In stock
Free delivery · 2–4 working days
Free to UK mainland (DHL/DX/DPD), in-stock items ship within 24h. Excludes Channel Islands, Isle of Man, Scilly Isles & Scottish Islands; a surcharge may apply to some remote areas.
30-day returns
Change your mind within 30 days. Sold & shipped via Costway.
Manufacturer warranty included
Covered against manufacturing defects. Real UK aftercare.
This Costway 40 L/day dehumidifier is a versatile home dehumidifier UK households can use across whole floors, pulling up to 40 litres of moisture daily (at 32°C, 90% RH) and covering rooms up to 35 m². That makes it a strong fit for a typical three-bed home, large lounge, kitchen-diner or damp-prone hallway where condensation and black mould take hold in winter. Five working modes and two fan speeds let you dial it in for everyday humidity control, laundry drying or continuous operation, while the generous 6.5 L tank cuts down on emptying. Power runs from 320 W up to 420 W depending on conditions, so at 26p/kWh you are looking at roughly 8p to 11p per hour, genuinely cheap for daily damp control. At ≤44 dB it is quiet enough to leave running in a living space and on the gentler settings it won't dominate a bedroom. A smart touch panel, a three-colour humidity indicator that shows conditions at a glance, and a child lock keep it simple and family-safe. When the tank fills it stops automatically and sounds a buzzer, or you can fit the 30 cm hose for hands-off draining. Inside the box: the dehumidifier, drain hose and instruction manual.
Highlights
- Removes up to 40 L of moisture per day
- Covers spaces up to 35 m²
- 5 working modes and 2 fan speeds
- Large 6.5 L water tank
- Auto shut-off and buzzer when tank is full
- Touch panel, 3-colour indicator and child lock
Description
This Costway home dehumidifier removes up to 40 litres of moisture per day (at 32°C, 90% RH) and covers areas up to 35 m². You can set your target humidity anywhere between 30% and 80%.
Five working modes and two fan speeds let you match the unit to the job, while a generous 6.5 L tank means fewer trips to empty it. When full, the dehumidifier stops automatically and sounds a buzzer.
A smart touch control panel, a 3-colour humidity indicator and a child lock make it easy and safe to use around the home.
What's in the box
- Dehumidifier
- Drain hose
- Instruction manual
Specifications
- Dehumidification
- 40 L/day (32°C, 90% RH); 25 L/day (30°C, 80% RH); 13 L/day (27°C, 60% RH)
- Coverage area
- Up to 35 m²
- Power
- 320 W (27°C, 60% RH); up to 420 W (32°C, 90% RH)
- Power source
- 220-240V / 50Hz
- Water tank
- 6.5 L
- Timer
- 0-24 hours
- Drain hose length
- 30 cm
- Power cord length
- 180 cm
- Noise level
- ≤44 dB
- Net weight
- 14 kg
- Dimensions
- 34 x 23 x 57 cm (L x W x H)
Ideal for
Dehumidifier 40L/Day with 5 Modes and 2 Speed — FAQs
What size house does the Costway 40L dehumidifier cover?
It is rated for spaces up to 35 m², so it suits a large room, open-plan area or a typical home's main damp zones. Extraction is up to 40 L/day at 32°C/90% RH, dropping to around 13 L/day in cooler 27°C/60% conditions.
How much does this dehumidifier cost to run per hour?
It uses between 320 W and 420 W depending on humidity. At about 26p/kWh that works out at roughly 8p to 11p per hour, and the compressor switches off once your target humidity is reached, so daily cost is usually lower.
Can I leave the Costway 40L dehumidifier on all night?
Yes. At ≤44 dB it is quiet enough to run overnight, and the child lock plus auto shut-off when the 6.5 L tank is full make unattended running safe. For continuous overnight drying, fit the 30 cm hose.
Does it help with damp and mould?
Yes. By holding relative humidity between 30% and 80% it removes the moisture mould needs to grow, helping prevent black mould on walls, windows and fabrics in damp rooms.
What's in the box?
You get the dehumidifier, a drain hose for continuous drainage and an instruction manual.
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