Perfect for SMALL bedrooms, bathrooms, cupboards, wardrobes, offices, and caravans, this compact unit delivers powerful performance without noise or bulk.

Why Choose This Portable Dehumidifier?

Powerful Moisture Removal

Removes up to 300ml of moisture per day, helping to prevent:

Mould & mildew
Condensation
Musty odours
Damp air discomfort

Enjoy peace and quiet with advanced thermo-electric Peltier technology:

Ideal for small bedrooms, offices and confined spaces
No loud compressor noise
Energy Efficient – Only 25W
Keep your space dry without high electricity bills:

 

Low power consumption
Eco-friendly operation
Cost-effective daily use
Smart Climate Display
Stay in control with real-time monitoring:

Displays temperature & humidity levels
Easy-to-read digital interface
One-touch operation
Compact & Space-Saving Design
Designed for tight spaces where traditional units won’t fit:

Fits easily in small cupboards, small bathrooms, and desks
Lightweight & portable
Modern, minimal aesthetic
Customisable Ambient Lighting
Set the mood while improving your air:

Multiple LED colour options
Soft ambient glow
Perfect for bedrooms or relaxation spaces
Automatic Shut-Off Protection
No spills, no stress:

Automatically turns off when tank is full
Indicator light alerts you
Safe for overnight use
Easy-Clean 1.2L Water Tank
Simple maintenance, hassle-free use:

Large 1.2L capacity tank
Easy to remove and clean
Visible water level indicator
Perfect For Small Spaces
This unit is specifically designed for compact areas (10–15m²):

Small Cupboards & wardrobes
Small Bathrooms & laundry rooms
Small Bedrooms & offices
Caravans & small living areas
Note: This unit is designed for small spaces. For larger rooms or heavy damp environments, explore our full range of dehumidifiers, including 2L, 12L, 25L, and commercial 50L & 90L models.

Product Specifications

Auto-stop function: Yes
Capacity: Approximately 300ml per day (at 25℃, 85% relative humidity)
Cooling element: Thermo-electric Peltier module
Color: White
Coverage area: 10–15m²
Decibel rating: 25dB
Fan: Brushless motor
Material: ABS
Minimum working environment: Temperature: Above 15℃ Humidity: Above 40% relative humidity
Optimum working environment: Temperature: 25℃ Humidity: Above 85% relative humidity
Packed dimensions: 178mm (L) × 167mm (W) × 294mm (H)
Unpacked dimensions: 145mm (L) × 135mm (W) × 255mm (H)
Voltage and power: DC 12V, 30W
Water tank capacity: 1.2 Liters
Weight (packed): 1.5kg
Weight (unpacked): 1.2kg
View the complete user manual for the GMCDH03 dehumidifier here.

Using advanced Peltier technology, the unit draws in humid air, condenses the moisture, and collects it in the water tank—leaving behind fresh, dry air.

When To Use

Best results in:

Humid environments
Bathrooms after showers
Closed cupboards or wardrobes
Small enclosed living spaces
NOTE : Performance may reduce below 15°C and is not effective below 5°C.

Frequently Asked Questions

What is the moisture removal capacity of this dehumidifier?

This unit removes up to 300ml of moisture per day under optimal conditions (25°C and 85% relative humidity), making it ideal for small enclosed spaces.

What size area is this portable dehumidifier suitable for?

It is designed for small spaces between 10–15m², such as:

Cupboards & wardrobes
Bathrooms
Bedrooms
Offices
Caravans
How does the Auto Shut-Off function work?

The unit will automatically switch off when the water tank is full to prevent overflow. An indicator light will alert you when it needs to be emptied.

How quiet is the portable dehumidifier?

It operates at approximately 25–35dB, which is quieter than a typical library—perfect for bedrooms, offices, or nighttime use.

How energy efficient is this unit?

This dehumidifier uses only 25–30W of power, making it an energy-efficient and cost-effective solution for everyday use.

What is the water tank capacity?

The unit features a 1.2-litre removable water tank, allowing for longer operation before needing to empty.

How do I clean and maintain the unit?

Maintenance is simple: Empty and rinse the water tank regularly. Wipe down the exterior with a soft cloth. Ensure airflow vents are kept clear

Does this dehumidifier display humidity and temperature?

Yes, it includes a real-time digital display showing both humidity and temperature levels for easy monitoring.

Can I leave the portable dehumidifier running overnight?

Yes, thanks to its quiet operation and automatic shut-off, it is safe and ideal for overnight use.

Does the unit have different lighting options?

Yes, it features customisable ambient LED lighting with multiple colour options, perfect for creating a comfortable atmosphere.

What type of technology does this dehumidifier use?

It uses thermo-electric Peltier technology, which means:

No compressor
Quiet operation
Compact design
What are the ideal operating conditions?

For best performance:

Temperature: Above 15°C
Humidity: Above 40% RH
Optimal: 25°C and high humidity levels
Can this portable dehumidifier be used in large rooms?

This unit is specifically designed for small spaces. For larger rooms or heavy moisture environments, we recommend exploring the GMC range of higher-capacity dehumidifiers (2L–90L models).

Is this portable dehumidifier suitable for very cold environments?

Performance may reduce below 15°C, and the unit is not designed to operate effectively below 5°C.

Does this product come with a warranty?

Yes, this product includes a 2-year warranty, giving you peace of mind and confidence in your purchase.

Still unsure? Get in touch with the GMC Aircon team—we’re always happy to help you choose the perfect solution.

What’s in the Box

1 x GMCDH03 Portable Dehumidifier

1 X Power Adapter

1 X User Manual

1 X Removable Water Tank