EcoAir DD-100017 DD3 Classic MK3 11L Desiccant Dehumidifier
Need something that actually sorts the damp problem across a whole house? The EcoAir DD3 Classic MK3 is the biggest domestic desiccant dehumidifier EcoAir makes, and it’s built for exactly that: sustained, year-round moisture control in larger homes. Rated as a Which? Best Buy for 2024, the DD3 Classic MK3 pulls up to 11 litres of water from the air per day (measured at 20°C, 60% RH) and is specified to effectively cover spaces up to about 90 m² — so it’s a sensible pick for three-to-six bedroom houses or large flats.
What sets it apart is E7S technology. The unit senses ambient humidity and automatically shifts between full power, economy and standby to match the conditions. That means it works hard when you need it (for example, after a wet day or during laundry drying) and eases off to save energy as rooms dry out. The DD3 samples room humidity using a low-power mode (25W) and then runs at 420W on low or 735W on high when extracting — flexible performance depending on demand.
Practical features make life easier. The DD3 Classic MK3 has a clear digital display that shows the real-time humidity level and user settings, plus a powerful laundry mode for fast drying. The 4.2-litre tank has a lid to prevent spills and a carry handle for tidy emptying; if you’d rather not lift the tank, the supplied 1-metre continuous drainage hose keeps things hands-free. Auto-Restart restores your settings after power cuts and anti-tilt protection switches the unit off if it’s knocked over — useful for busy homes and multi-room deployment.
It’s also designed with comfort in mind. EcoAir desiccant units release slightly warm air as they run, so the DD3 Classic MK3 helps dry clothes faster and can make your heating appear more effective in winter. Noise is reasonable for this class of product — roughly 36 dB(A) at low and up to 47 dB(A) at high — and airflow is strong (132 m³/hr), so it moves a lot of air without sounding intrusive.
Air quality is considered too: the DD3 includes an antibacterial filter to reduce airborne bacteria, plus practical safety and convenience features such as Over-Dry Protection, tank-full shutdown, check indicators and a 2 / 4 / 8 / 12 hour timer. At 7.5 kg with compact dimensions (379 × 520 × 239 mm) it’s portable enough to move between rooms as needed.
In short, the EcoAir DD3 Classic MK3 is a seriously capable 11L dehumidifier for homes that need broad coverage, automatic, efficient operation and laundry-friendly drying — a robust desiccant dehumidifier backed by E7S technology and designed to work quietly and reliably across larger living spaces.
Technical summary (as supplied)
- Moisture removal: 11 L/day (20°C, 60% RH)
- Power consumption: 25W (sampling), 420W (low), 735W (high)
- Noise level: 36–47 dB(A)
- Water tank: 4.2 L (with lid) + 1 m continuous drainage hose
- Airflow: 132 m³/hr
- Timer: 2 / 4 / 8 / 12 hours
- Safety: Anti-tilt protection, Auto-Restart, Over-Dry Protection, Water Tank Full shutdown
- Weight / Dimensions: 7.5 kg; 379 × 520 × 239 mm
- Warranty info: (as supplied in source)
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