EcoAir DD1 Simple Blue MK3 vs Honeywell 30L/Day
We compare the EcoAir DD1 Simple Blue MK3 and the Honeywell 30L/Day across every dimension that matters - our scores, the key specs, and how each performs on the things you will actually notice day to day.
At a glance
| EcoAir DD1 Simple Blue MK3 | Honeywell 30L/Day | |
|---|---|---|
| Our score | 8.8/10 | 6.8/10 |
| Best for | Tackling damp, condensation and drying laundry around the home | Tackling damp, condensation and drying laundry around the home |
| Not ideal for | Buyers chasing the lowest running cost, where a compressor model is cheaper to run in a heated room | Cold, unheated spaces below about 15°C, where a desiccant model copes better |
| Brand | EcoAir | Honeywell |
Extraction Rate and Performance
EcoAir DD1 Simple Blue MK3
This dehumidifier is rated for 7.5 litres of water removal per day, which sets a clear benchmark for how much moisture it can extract in normal use. The extraction rate varies with the moisture level in the room and how much water the air can hold. When conditions are only moderately damp, the rated daily figure is more likely to be reached, while very humid conditions may lower real-world output. The unit also includes a laundry drying mode.
Honeywell 30L/Day
Extraction performance for this dehumidifier/Day is measured by how much water it can remove from the air in a 24-hour period, listed as 30 litres/day. This indicates a design focus on regular humidity control rather than occasional spot drying. Performance depends on how humid the room air is and how consistently the unit is allowed to run. The 3.4L water tank collects water until it fills, at which point it needs emptying. In very damp conditions, it may fill more quickly and cycle more often, while moderate moisture supports steady dehumidification. Tank capacity may limit long unattended periods.
Room Size and Coverage
EcoAir DD1 Simple Blue MK3
Room size and coverage depend mainly on the unit's stated extraction capacity, rated at 7.5 litres per day. This figure sets the practical upper limit for how much dampness the dehumidifier can remove over time. In small to mid-sized rooms, it can usually help keep the air feeling drier if moisture sources are limited. In larger spaces, or where many wet items are drying, performance may feel slower because the same 7.5 litres has to cover more air volume. Placement also matters, as airflow around the intake and outlet affects results. This type of dehumidifier is best suited to targeted rooms rather than whole homes.
Honeywell 30L/Day
For room size and coverage, the Honeywell/Day is designed around its stated capacity of removing 30 litres of dampness per day. It is therefore best suited to areas where humidity needs steady control, rather than short, isolated drying tasks. It fits typical home rooms where damp air returns after showers, cooking, or wet laundry, though performance can vary depending on how open the room is to outside moisture. For step-by-step setup, position the unit centrally, keep doors mostly closed, and run it long enough to reach the target level of dryness. Very large and very leaky spaces may be harder to manage.
Tank Capacity and Drainage
EcoAir DD1 Simple Blue MK3
Tank capacity and drainage determine how often the EcoAir needs attention during longer drying sessions. This model is a desiccant dehumidifier, targeting moisture through its internal process rather than relying on a large water tank for collection. With only 7.5 litres/day stated, users should plan for frequent checks, particularly when drying damp laundry. For best results, it should be positioned where drainage is straightforward if continuous drainage is available.
Honeywell 30L/Day
The dehumidifier/Day dehumidifier includes a 3.4L water tank, which affects how often the unit needs attention to keep extracting moisture. As condensation collects, the tank fills, and once it reaches capacity the machine must pause or stop until the tank is emptied, otherwise dehumidifying performance may not continue as expected. In practical terms, the smaller tank means more frequent checks are typically needed in wetter spaces such as basements or laundry areas, while drier conditions allow longer gaps between emptying. If the model supports direct drainage, this would reduce the need to handle the tank.
Noise Level
EcoAir DD1 Simple Blue MK3
Noise level matters because it affects whether the dehumidifier can run comfortably in a living space, especially during overnight or daytime laundry drying. The product title specifies a "Quiet 34dBA" rating, which indicates it is intended to be relatively unobtrusive. Actual loudness can vary with room layout, surface resonance, and how steady airflow remains. The rotary dial suggests settings can be adjusted.
Honeywell 30L/Day
Noise level is an important factor for anyone using the Honeywell/Day dehumidifier at home, especially in laundry rooms or sleeping areas. In everyday use, the unit's running sound can affect comfort, because it operates continuously when dampness removal is needed. The 24Hr timer helps, as it allows planning of operation and avoiding night-time running if the noise is noticeable. The digital display also supports quick status checks, which can reduce unnecessary adjustments.
Energy Use and Running Costs
EcoAir DD1 Simple Blue MK3
When considering energy use and running costs, the EcoAir's key data point is its 7.5 litres/day dehumidifying capacity, since this gives a rough sense of how much dampness it is intended to remove each day under suitable conditions. Desiccant dehumidifiers can use energy differently than compressor units, so running costs depend heavily on room size, airflow, and how often the target space is ventilated. Owners should budget by tracking actual usage once in their home.
Honeywell 30L/Day
Energy use and running costs matter because a dehumidifier typically runs for long periods when indoor air is damp. With the dehumidifier/day unit, the stated capacity is 30 litres/day, and it uses a 3.4L water tank, so tank size can affect how frequently it stops to empty. In real homes, running costs depend on room volume, season and how often doors stay open. A 24-hour timer can help schedule operation.
Modes and Controls
EcoAir DD1 Simple Blue MK3
Modes and controls on the dehumidifier are designed for practical daily use. The main set-up is handled using a rotary dial rather than touch buttons, keeping adjustments straightforward. This dial-based approach can be less precise than models with digital readouts, depending on how people set levels. For day-to-day operation, the unit uses preset-style options rather than complex menus, which reduces confusion. A laundry drying mode is available, intended to help clothes dry more reliably during typical indoor use. The anti-bacterial filter supports cleaner airflow, but filter care routines are still required.
Honeywell 30L/Day
Modes and controls help the Honeywell 30L/Day dehumidifier suit different home needs, but the exact control set-up is only partly clear from the product title. The unit is described as having a digital display and a 24 hour timer, which indicates timed operation and straightforward status monitoring. It is positioned for home drying use, including drying clothes, so at least one mode may be designed to support laundry tasks. A washable dust filter points to user-cleaning controls. A 3.4L water tank is listed, meaning the unit will require attention when the tank reaches full capacity.
Compressor or Desiccant
EcoAir DD1 Simple Blue MK3
The EcoAir DD1 Simple Blue uses a drying agent system, rather than a compressor, to remove moisture from indoor air. This matters because the unit is rated at 7.5 litres/day, indicating it is designed for steady damp control rather than rapid, high-capacity extraction. Desiccant dehumidifiers work by drawing humidity into the drying medium, then releasing that moisture, typically with internal airflow to support the process. The advantage is simpler hardware with fewer moving parts, which can suit quieter rooms. A potential downside is that performance can vary with room temperature and humidity, and heavier condensation loads may require patience.
Honeywell 30L/Day
This matters because compressor-based dehumidifiers typically remove moisture by cooling and condensing damp air, while desiccant systems remove moisture by absorbing it and then releasing it as heat. With only the stated details of a 30 litres per day output and a 3.4 L tank, the technology cannot be confirmed from the information given, so buyers need the manual or a product listing that explicitly confirms the type of dehumidification. If the unit is compressor-based, performance can vary depending on room temperature, particularly in colder spaces.
Who Is This Dehumidifier For?
EcoAir DD1 Simple Blue MK3
Who is the EcoAir best suited for? It suits people who need steady humidity control in smaller indoor spaces where a 7.5 litres/day capacity is appropriate, and where low noise matters, as it is described as a quiet 34dBA unit (in the product title). It also suits households that dry laundry regularly, because it includes a laundry mode. For allergy-conscious users, it may suit needs thanks to an anti-bacterial filter.
Honeywell 30L/Day
Who is the Honeywell/Day dehumidifier for? It suits households that need a home model capable of removing up to 30 litres of moisture per day, particularly where dampness causes musty smells, wet laundry delays, or condensation on windows. The 3.4L water tank fits users who prefer manual emptying rather than continuous drainage, but it will need regular checking. It also targets homes that want control via a digital display and planned drying routines using a 24-hour timer. For very small rooms, 30 litres per day may be more capacity than required.
EcoAir DD1 Simple Blue MK3: pros
- Removes up to 7.5 litres/day
- Desiccant type - good in cold rooms
- Laundry mode for drying clothes indoors
Cons
- The water tank needs regular emptying unless you plumb in the drainage hose
- Running it adds to electricity use, so a humidistat or timer helps keep costs down
- Desiccant models use more power than compressor models in a warm room
Honeywell 30L/Day: pros
- Removes up to 30 litres/day
- 3.4L tank
Cons
- The water tank needs regular emptying unless you plumb in the drainage hose
- Running it adds to electricity use, so a humidistat or timer helps keep costs down
- Compressor models are less effective in cold rooms below about 15°C
Our verdict
Our pick is the EcoAir DD1 Simple Blue MK3 (our score 8.8/10) - A practical dehumidifier (7.5 litres/day, desiccant) for keeping humidity down and preventing mould and condensation. The Honeywell 30L/Day is still worth it if it is cheaper when you check, or if it better matches your specific needs.