Cyclone Desert Dehumidifier 138 L/day – High-capacity compressor with direct drainage

Cyclone Desert Dehumidifier 138 L/day

The highest-capacity unit in the Desert range: compressor, digital humidistat and direct drainage without a tank, with an airflow of 1,000 m³/h. For large grow rooms with high irrigation loads.

Capacity and testing conditions

138 L/day.

The manufacturer does not specify the temperature and humidity conditions under which this figure is measured for this model, and we are not going to make them up. It is important to know this because liters/day are not comparable between brands: some manufacturers publish figures at 30 °C / 80% RH, very favourable conditions, while others—such as Quest, using the American AHAM standard—test at 26.7 °C / 60% RH, which is much more demanding, where the same unit delivers a considerably lower figure. Without the testing conditions, these 138 L/day cannot be directly compared with the liters of a unit tested under AHAM.

Specifications

• Capacity: 138 L/day (testing conditions not specified by the manufacturer)
• Technology: compressor
• Refrigerant: R410A
• Power consumption: 1,350 W
• Airflow: 1,000 m³/h
• Control: digital humidistat
• Drainage: direct, with 1 m hose included. No tank
• Dimensions: 69 × 53 × 98.5 cm
• Operating temperature range: not published by the manufacturer

Transparency note: some distribution product sheets swap the power consumption figures for the 90 L and 138 L models and attribute 1,075 W to this model, which is less than the 90 L model—an impossibility. The correct power consumption for this unit is 1,350 W.

No tank: fixed installation

There is no tray to empty. The water exits through the included 1 m hose and must be led to a drain or a container. With a capacity of 138 L/day, a tank would make no practical sense: this unit is installed and left in place.

About R410A refrigerant

It uses R410A. It works well, but it is not "environmentally friendly," no matter how much that is claimed on some commercial product sheets: its GWP is 2,088 and it is subject to the European phase-down schedule. We prefer you know this before buying.

Honesty about drying

To dry, you need to maintain 55–62% RH for 10–15 days at 18–20 °C. We do not recommend this unit as a drying dehumidifier: the manufacturer does not publish the operating temperature range and, as it is a compressor unit with no defrost data, performance cannot be guaranteed below 15 °C. For drying, look for a unit with a stated range and automatic defrost. This is a unit for production rooms.

How to size it

The useful reference is not square meters: an indoor grow room evaporates almost all the water that is irrigated. Add up the liters of irrigation per day in the room and size it based on that, allowing a margin, because the testing conditions for this model are not specified.

Note on the images: the three Cyclone Desert models (60, 90 and 138 L/day) share the same chassis and there is no specific photograph for each capacity. The images show the entire range and do not reflect the exact size of this model; use the dimensions as your guide.

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Every item goes through a check before shipping to make sure it arrives in perfect condition and ready to use.

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1. Plan for a fixed, accessible location: with 138 L/day, drainage must be properly managed.
2. Connect the included 1 m hose to a drain with sufficient capacity; a container would fill up quickly.
3. Keep the grilles clear so that the 1,000 m³/h can circulate without restriction.
4. Set the target humidity on the digital humidistat according to the growth stage.
5. Check the drainage regularly: with this flow rate, an obstruction will be noticeable quickly.
6. Do not use it as a drying unit: without a published temperature range or stated defrost function, its performance cannot be guaranteed below around 15°C.