NETTA 20L/Day vs NETTA 35L/Day
We compare the NETTA 20L/Day and the NETTA 35L/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
| NETTA 20L/Day | NETTA 35L/Day | |
|---|---|---|
| Our score | 8.9/10 | 8.7/10 |
| Best for | Tackling damp, condensation and drying laundry around the home | Tackling damp, condensation and drying laundry around the home |
| Not ideal for | Cold, unheated spaces below about 15°C, where a desiccant model copes better | Cold, unheated spaces below about 15°C, where a desiccant model copes better |
| Brand | NETTA | NETTA |
Extraction Rate and Performance
NETTA 20L/Day
How well the dehumidifier/Day dehumidifier performs comes down to its stated extraction capacity, which is up to 20 litres of dampness per day. In practical use, that output depends on how much moisture is present in the air, and on how consistently the unit can pull water out through its air filter. The 4.5L water tank may need emptying during heavier periods if continuous drainage is used. With digital control, it can be set up with a timer, and the unit restarts automatically after a power loss. Overall, performance should match the rating only in suitable conditions.
NETTA 35L/Day
Extraction Rate and Performance for this dehumidifier/Day is assessed by the amount of moisture it removes during day-to-day use, and by how it handles condensed water. The unit has a 35 litre-per-day rating, indicating its intended moisture removal capacity under typical indoor conditions, although performance can change with air humidity and season. Condensed water is collected in a 5.5L tank, which requires emptying when full. For continuous operation, it also offers continuous drainage that routes water away. A laundry drying mode is included, designed to reduce moisture more quickly on damp items.
Room Size and Coverage
NETTA 20L/Day
Room size and coverage for the NETTA/Day are best judged by how much humidity is in the space, because the unit's output is rated at up to 20 litres per day rather than for a fixed square metre. It should therefore be matched to damp severity, not room dimensions alone. For example, a small but very humid bathroom may need less time than a larger, more evenly humid room. People can start with the laundry drying mode, observe the water output and drying progress, then adjust using the digital control panel and timer.
NETTA 35L/Day
Room size and coverage depend on the level of dampness and the conditions in the space, as moisture removal is rated at 35 litres/day rather than tied to a fixed square-metre area. The unit can reduce dampness more quickly in smaller, more sealed rooms, where warm air repeatedly passes through its airflow path. In larger or more open areas, it may take longer to reach similar results, particularly if outside air enters frequently. For best coverage, place the unit where air can circulate, avoid blocking vents, and expect laundry drying mode to prioritise quicker moisture control. Performance limits are likely linked to humidity. Not stated.
Tank Capacity and Drainage
NETTA 20L/Day
A key practical point with the dehumidifier/Day dehumidifier is its 4.5L water tank, because tank size affects how often the unit needs emptying when continuous drainage is not used. For damp control, a larger tank can reduce interruptions, while a smaller tank increases them. The unit also supports continuous drainage, which lets water run away instead of filling the tank. For users who want less routine emptying, continuous drainage is the main advantage, although installation and placement still affect how well it works. If continuous drainage is not used, periodic checks are needed.
NETTA 35L/Day
Once dampness is being controlled at a practical pace, attention shifts to how the water is handled, because that determines how often the unit needs attention. The NETTA/Day uses a 5.5L water tank, so it is expected to require emptying when the tank fills. For easier, uninterrupted operation, it supports continuous drainage, which lets water flow away directly and can reduce the need for daily checks. In practical use, someone can start with the tank option for short sessions, then switch to continuous drainage for longer periods, especially in basements or laundry areas. The drainage choice affects maintenance frequency.
Noise Level
NETTA 20L/Day
Noise level is a key day-to-day factor for the NETTA 20L/Day low energy dehumidifier, particularly because tank emptying habits can affect how often the unit is disturbed. The NETTA includes a 4.5L water tank and also offers continuous drainage, so noise complaints can be linked to when the tank fills rather than steady operation. In normal use, the digital control panel and timer settings do not change sound, but they can affect when the unit runs. Continuous drainage can reduce interruptions related to tank filling, although the fan still cycles with humidity. The sound level may be noticeable in bedrooms, especially at night.
NETTA 35L/Day
How noisy is the dehumidifier/Day when it is running? This dehumidifier is described as "low noise, " suggesting it should be easier to live with in a home or office. The product title does not list any sound level, such as dB, and it does not explain how noise changes across modes. It includes laundry drying and an auto restart feature, so the unit may run longer when the environment is damp. A useful approach is to listen during initial operation and note whether it disturbs sleep, desks, or quiet rooms.
Energy Use and Running Costs
NETTA 20L/Day
Running costs for the dehumidifier/Day low energy dehumidifier depend mainly on how many hours it is operating. The unit is rated at 345W and is designed for 20 litres per day when conditions require it, so energy use is driven by runtime rather than by the volume of water removed alone. Total cost can also be affected by tank behaviour, since a full 4.5L tank can prompt stopping and emptying, while continuous drainage helps avoid that stop-start pattern. When the room is less humid, the workload can reduce, which may lower running costs by reducing how hard the dehumidifier needs to work.
NETTA 35L/Day
Energy use and running costs depend mainly on how often the NETTA/Day needs to remove moisture. It is rated for 35 litres/day at maximum capacity (5.5L water tank), so it will likely cycle more frequently in very damp spaces, or when laundry drying is active. When the tank fills, the unit must stop or manage emptying, so short, frequent cycles can increase electricity use. Continuous drainage can reduce interruptions by sending water away, but the dehumidifying demand is still driven by the humidity level. Costs are likely to be higher during rainy periods, or after multiple loads of wet laundry.
Modes and Controls
NETTA 20L/Day
Modes and controls on the NETTA/Day dehumidifier are built around a digital control panel with a timer, supporting day-to-day damp management and dedicated drying settings. The unit includes damp and mould control modes, plus a laundry drying mode for laundering days. A 4.5L water tank is monitored, and continuous drainage is supported for uninterrupted use. An auto restart function activates when power returns after an outage, and a child lock helps prevent accidental changes, although manual checks of settings remain necessary.
NETTA 35L/Day
The dehumidifier's Dehumidifier 35L/Day includes several modes and control features designed for everyday damp conditions, including laundry drying. It offers a laundry drying mode intended to speed drying when clothes are indoors, and it can also be used for general mould control needs. The unit uses a 5.5L water tank, and it includes auto restart so operation resumes after a power interruption, though users should still check conditions. A timer helps set run times, while a child lock helps reduce accidental changes to settings, particularly around the controls. An air filter is included to support cleaner airflow.
Compressor or Desiccant
NETTA 20L/Day
The dehumidifier/Day is described as a dehumidifier with a 20 litres per day capacity. That technical choice affects how the unit behaves as room conditions change, because compressor and desiccant models dry air in different ways. Buyers are still left with uncertainty, as the available details highlight a 4.5L tank, continuous drainage and laundry drying, without confirming the underlying drying technology. Checking the manual or product datasheet is advised to confirm the system type.
NETTA 35L/Day
The NETTA Dehumidifier 35L/Day uses refrigeration-based dehumidifying (compressor-style) rather than a desiccant wheel, because no desiccant system is stated in the product title. This type typically pulls water from indoor air, condenses it into collected water, and then either fills the 5.5L tank or sends it away via continuous drainage if used. In everyday homes, compressor units generally work continuously while the space remains enclosed, with performance influenced by the room's temperature and humidity. The appliance also includes a laundry drying mode, which may help with damp fabrics, but it does not replace good ventilation.
Who Is This Dehumidifier For?
NETTA 20L/Day
Because this dehumidifier/Day model's drying technology (compressor or desiccant) is not stated in the product title, buyers may want to confirm the system type before expecting performance across different room conditions. This dehumidifier suits homes that need steady moisture control, especially where damp and mould control are priorities. It is aimed at people who want automated help, with features including auto restart, a timer, and a laundry drying mode. The 4.5L water tank supports shorter drying cycles, while continuous drainage supports longer runs such as overnight drying. It is also suitable for households with children, thanks to the child lock.
NETTA 35L/Day
The NETTA dehumidifier (35L/day) suits people who want steady humidity control at home or in an office, particularly where damp and mould are concerns. It is designed for households that prefer a 5.5L water tank for routine collection, reducing how often the tank needs emptying. For longer periods of use, the continuous drainage option supports unattended collection, while the auto-restart feature helps the unit resume operation after power changes. The laundry drying mode is intended for drying clothes indoors without needing additional appliances. A child lock feature adds practical safety for use around children.
NETTA 20L/Day: pros
- Removes up to 20 litres/day
- 4.5L tank
- Continuous drainage option for hands-off running
- 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
- Compressor models are less effective in cold rooms below about 15°C
NETTA 35L/Day: pros
- Removes up to 35 litres/day
- 5.5L tank
- Continuous drainage option for hands-off running
- 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
- Compressor models are less effective in cold rooms below about 15°C
Our verdict
Our pick is the NETTA 20L/Day (our score 8.9/10) - A practical dehumidifier (20 litres/day, 4.5L tank) for keeping humidity down and preventing mould and condensation. The NETTA 35L/Day is still worth it if it is cheaper when you check, or if it better matches your specific needs.