Industrial Dehumidifier Capacity Sizing Guide | L/D Selection by Moisture Load

Quick answer: industrial dehumidifier capacity is matched to the moisture load of the space, not to the room volume alone. Estimate the moisture sources (drying process, open water, people, air change, or incoming humid air), then select a machine whose rated L/D at the operating temperature covers that load with margin. Linggongshare publishes rated capacities from 60 L/D (HT-DG60A1) up to 480 L/D (HT-DG480A1).

Step 1 — Define the moisture load

Capacity planning for a commercial dehumidifier starts with the water that must be removed per day. For industrial and semi-industrial spaces the main sources are:

• Process or product moisture — drying goods, freshly poured concrete, wet storage, wash-down areas.
• Air change and infiltration — humid outside air entering through doors, vents and the building envelope.
• Open water surfaces — tanks, pools, process baths.
• People and activity — occupancy adds a modest but real load.

Each source is estimated in litres per day (L/D) or kg per hour (kg/h). Sum the sources to obtain the total design moisture load. When the exact process load is not yet known, the safe approach is to measure or estimate the worst case, then size above it.

Step 2 — Relate capacity to room volume as a first check

In an HVAC dehumidifier review, room volume alone does not set the unit size, but it provides a useful first check. As a general engineering planning reference used in the industry, a space with a normal (non-process) moisture load and a target of roughly 50–60 % RH often falls in the order of 0.5–1.0 L/D of rated capacity per 10 m³ of room volume. A 1,000 m³ warehouse would therefore be reviewed in the 50–100 L/D range before process loads are added, and a drying or production area will need more. Treat these as planning ranges only — the measured process moisture load and the operating temperature are what determine the final selection, and Linggongshare confirms the exact model against your stated conditions rather than against volume alone.

Step 3 — Apply the Linggongshare capacity ladder

Match the estimated total load to the nearest rated capacity, then confirm the operating temperature, power supply and drainage route with the model page:

• 60 L/D — HT-DG60A1 and the portable industrial range for smaller rooms, workshops and moderate loads.
• 90–108 L/D — HT-DG90A1 and HT-DG138A1 for mid-size workshops and storage.
• 150–170 L/D — HT-DG158A-B and HT-DG168A1 / HT-DG168B for larger areas and higher moisture loads.
• 240 L/D — HT-DG240A1 for production and drying environments.
• 360–480 L/D — HT-DG360A1 and HT-DG480A1 for the heaviest industrial moisture control.

Rated capacities in L/D are published at the machine’s nominal test condition. Actual removal falls as ambient temperature drops, so confirm the achievable rate at the site’s operating temperature with the exact model datasheet before final approval.

Step 4 — Record the project conditions for quotation

To receive a confirmed model recommendation, send: application and moisture source, room volume and target RH, operating temperature range, power supply (voltage/frequency/phase), drainage route, required quantity and destination market. Linggongshare confirms the suitable family and exact model against these conditions — capacity is selected from the rated L/D ladder above, then verified for the site’s temperature and process load.

This guide gives a planning method, not a guarantee of performance in a specific building. Final selection must be confirmed against the exact-model datasheet and the measured site conditions.