Arida S9L dehumidifier for cold rooms with HEPA filter
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Desiccant dehumidifier with HEPA filter, ionization and carbon filter. Suitable for 100 m2.

The Arida S9L is a versatile dehumidifier with many great features:
- The desiccant rotor ensures optimal drying at all temperatures
- The HEPA filter provides good air purification
- Ionization reduces odors in both basements and boats
- The carbon filter removes hazardous gases and VOCs
- The humidistat displays humidity and only activates dehumidification when needed
- Drain hose included
You'll hardly find a more complete dehumidifier for rooms with varying temperatures!
The Arida S9L is the perfect dehumidifier for all temperatures
Conventional dehumidifiers use a compressor to dry the air. This works well at normal indoor temperatures but poorly when it gets cold (below 15 degrees). The Arida S9L uses a desiccant rotor, making it effective at all temperatures, right down to zero degrees.
Best in test for low temperature - anbefaler.com test 2024
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HEPA Filter Purifies the air well. This will protect your health, and it will also protect your dehumidifier from building up dust internally. |
Washable pre-filter The pre-filter, which removes the largest dust particles, can be vacuumed and washed. |
Ionization against odor Ionization reduces odors in basements, boats, and other places where humidity often stagnates. |
Can be wall-mounted If you have limited floor space or want to mount the dehumidifier higher up, you can easily attach it with a wall bracket (accessory). |
Drain hose included Connect the included drain hose to direct water to a drain, or use the included water tank. |
Air ionization - against basement and boat odors
Ionization is smart for two reasons:
- Where there is dampness, odors often occur. This can be basement odor, boat odor, or mold smell. When you get a dehumidifier, much of this odor will disappear. If you turn on ionization, the odor will be removed much more effectively.
- When negative ions are released into the air, tiny dust particles will bind together into larger particles. These larger particles will then become heavy and fall, or be caught in the air filter. It is the small particles that are dangerous for your lungs, and ionization helps reduce the amount of small particles (Particulate matter).
Drain hose
If you use the dehumidifier in a place you don't visit often, such as a basement or a boat, you can connect a hose. This allows you to direct the water to a drain, eliminating the need to empty the water tank every day. A hose is included in the box, and if you want a more flexible hose, you should purchase this hose.
Hygrostat - never too dry
It is important to keep things dry, but it is also important that it doesn't get too dry. Therefore, the Arida S9 has a hygrostat, so you can set your desired dryness level. The dehumidifier then ensures a consistent and stable humidity. (A hygrostat controls the dehumidifier in the same way a thermostat controls a heater.) Generally, we recommend setting the hygrostat to approximately 50% relative humidity, and here you can read more about correct humidity levels.
What's included in the package?
When you buy an Arida S9L, you get one hose for continuous water drainage, one HEPA filter, and one carbon filter.
What happens if the power goes out?
If you use the dehumidifier in a cabin, boat, or basement where you aren't often, it can be useful to know what happens if the power goes out. The dehumidifier will, of course, stop. When power returns, the dehumidifier will automatically restart with the same settings as before the power outage. Not all dehumidifiers restart automatically after a power cut, so this is important if you use it in a place you don't visit every day.
| Drying technology | Drying rotor / sorption |
| Max capacity | 9 liters of water / day |
| Max fan capacity | 185 m3 / hour |
| Humidistat | Yes, 40% to 70% |
| Number of fan speeds | 3 |
| Automatic restart after power outage | Yes |
| Water tank volume | 5 liters |
| Air filter | HEPA + standard |
| Carbon filter | Yes, to reduce odors and VOCs |
| Ionization (remove odor + purify air) | Yes |
| Continuous drainage possible | Yes, hose included |
| Pump | Yes, as an accessory |
| Weight | 7.5 kg |
| Dimensions | 340 x 221 x 509 mm |
| Timer | Off-timer up to 24 hours |
| Operation | Electronic |
| Display | Yes, shows humidity |
| Noise level | Approx. 40 dB on lowest fan setting |
| Max power consumption | 780 Watt |
Noise level
| Noise level (dB) | |||
| SLEEP | NORMAL | TURBO | |
| Heating element ON | 41.3 | 46.7 | 50.3 |
| Heating element OFF | 40.5 | 46.5 | 50 |
| Air volume (m3/h) | 140 | 170 | 185 |
Dehumidification capacity
| Arida S9L | 30oC /60% RH | 27oC /60% RH | 20oC /60% RH | 15oC /60% RH | 10oC /60% RH | 5oC /60% RH |
| Dehumidification capacity (per day) | 8.3 L | 8.6 L | 9 L | 9 L | 9.2 L | 9.3 L |
| 30oC /80% RH | 27oC /80% RH | 20oC /80% RH | 15oC /80% RH | 10oC /80% RH | 5oC /80% RH | |
| Dehumidification capacity (per day) | 8.5 L | 8.7 L | 9.1 L | 9.1 L | 9.3 L | 9.5 L |
Arid
We have been selling products for a better indoor climate since 2010. The products were good, but they were not always adapted to our Nordic conditions.
That's why we established the brand Arida and developed a series of products specially adapted to our Nordic needs. The series includes products for both professional users and private homes.
We work for clean and safe air, with the right humidity.
Shipping
We offer free shipping to your nearest pick-up point on all orders over NOK 999. All orders are shipped within 24 hours of ordering, provided it is a regular working day.
Normally, you will have your goods at the pick-up point 1-3 days after we have received your order. We will send you a tracking number when the package leaves our warehouse, and the carrier will notify you when the package can be picked up. Therefore, it is important that you provide your mobile number and email address.



