Editorial Technical Reference

Dehumidifier

This page explains how Dehumidifier is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A dehumidifier is a mechanical component used within air conditioning, ventilation, or dedicated dehumidification systems to extract water vapor from air, thereby controlling relative humidity.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Dehumidifier

Definition
A dehumidifier is a mechanical component used within air conditioning, ventilation, or dedicated dehumidification systems to extract water vapor from air, thereby controlling relative humidity. It is typically employed in residential, commercial, and industrial environments where maintaining specific humidity levels is critical for comfort, process integrity, or preservation of materials. The unit operates by drawing moist air over a cold evaporator coil, causing condensation of water vapor, which is collected in a tank or drained away. The cooled, dry air is then reheated and returned to the space. Alternative technologies include desiccant wheels that absorb moisture and thermoelectric systems. The dehumidifier is available in various capacities and configurations, with key parameters such as dehumidification capacity (50–200 L/day at 30°C, 80% RH), air flow rate (200–1000 m³/h), power consumption (0.5–3.0 kW), supply voltage (220–240 V AC, single phase, 50/60 Hz), operating temperature range (5–38°C), operating humidity range (30–90% RH non-condensing), IP rating (IP20–IP34), refrigerant type (R410A–R32), noise level (35–55 dB(A) at 1 m), dimensions (400–800 × 400–600 × 800–1500 mm), weight (30–200 kg), and water tank capacity (5–50 L). Materials commonly used include aluminum, copper, plastic, and steel. Standards referenced for verification include GB/T 19411, ISO 5801, IEC 60335-1, IEC 60529, ISO 817, and ISO 3744. These values are indicative ranges; actual specifications must be confirmed with the manufacturer or supplier for a specific model. The dehumidifier is a component, not a complete system, and its selection depends on the target humidity level, space volume, ambient conditions, and integration with existing HVAC infrastructure.
Working Principle
The most common dehumidification principle is refrigeration-based: moist air is drawn over cold evaporator coils, causing water vapor to condense into liquid, which is collected or drained. The cooled air is then reheated and returned to the environment. Alternative methods include desiccant wheels that absorb moisture and thermoelectric cooling. The process is continuous, with the unit cycling air to maintain desired humidity levels.
Common Materials
Aluminum, Copper, Plastic, Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Dehumidification Capacity50–200 L/dayAt 30°C, 80% RHGB/T 19411
Air Flow Rate200–1000 m³/hHigher for larger spacesISO 5801
Power Consumption0.5–3.0 kWAt rated conditions
Supply Voltage220–240 V ACSingle phase, 50/60 HzIEC 60335-1
Operating Temperature Range5–38 °CBelow 5°C may frostGB/T 19411
Operating Humidity Range30–90 % RHNon-condensing
IP RatingIP20–IP34Indoor use; higher for wet areasIEC 60529
RefrigerantR410A–R32GWP < 2100ISO 817
Noise Level35–55 dB(A)At 1m distanceISO 3744
Dimensions (W×D×H)400–800×400–600×800–1500 mmCompact to industrial
Weight30–200 kgHeavier for larger capacity
Water Tank Capacity5–50 LOptional continuous drain

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Compressor
    Compresses refrigerant gas to increase pressure and temperature
    Material: Steel, Copper
  • Evaporator Coil
    Cools incoming air to condense moisture
    Material: Copper, Aluminum
  • Condenser Coil
    Reheats dried air before returning to environment
    Material: Copper, Aluminum
  • Fan Part
    Circulates air through the dehumidifier
    Material: Plastic, Aluminum
  • Water Collection Tank
    Collects condensed moisture for disposal
    Material: Plastic

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 15 psig (0 to 1.03 bar)
flow rate: 100 to 10,000 CFM (2.83 to 283 m³/min)
temperature: 40°F to 120°F (4°C to 49°C)
humidity range: 30% to 90% RH
Media Compatibility
✓ HVAC systems ✓ Industrial process air ✓ Compressed air lines
Unsuitable: Corrosive chemical environments (e.g., chlorine gas, strong acids)
Sizing Data Required
  • Required moisture removal capacity (pints/day)
  • Air flow rate (CFM)
  • Inlet air conditions (temperature and relative humidity)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Compressor motor burnout
Cause: Overheating due to restricted airflow, dirty condenser coils, or refrigerant issues leading to excessive electrical load and insulation breakdown
Evaporator coil icing/frost buildup
Cause: Low ambient temperatures, refrigerant undercharge, or airflow restriction causing coil temperature to drop below freezing point and ice accumulation
Maintenance Indicators
  • Unusual grinding or rattling noises from compressor area indicating bearing wear or loose components
  • Visible ice formation on evaporator coils or reduced moisture removal efficiency despite continuous operation
Engineering Tips
  • Maintain regular cleaning of air filters and condenser coils to ensure optimal airflow and heat transfer efficiency
  • Install humidity controller with setpoint adjustment to prevent compressor short-cycling and reduce mechanical stress during low-humidity conditions

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 5151:2017 (Non-ducted air conditioners and heat pumps - Testing and rating for performance) ANSI/AHAM DH-1:2015 (Dehumidifiers) CE marking (EU compliance for safety, health, and environmental protection)

Quoted from the published standard.

Manufacturing Precision
  • Moisture removal rate: +/- 10% of rated capacity
  • Power consumption: +/- 5% of rated wattage
Quality Inspection
  • Leakage current test (electrical safety)
  • Performance verification test (temperature and humidity control accuracy)

Manufacturers of Dehumidifier

5 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

BIOBASE GROUP
Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Blue Jay
Chongqing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Changzhou Vrcoolertech Refrigeration Co., Ltd.
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Fortior Technology
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Kholee Industrial Technology Yancheng Co., Ltd.
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
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Manufacturing capability
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Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Frequently Asked Questions

What is the typical dehumidification capacity range?

The capacity ranges from 50 to 200 liters per day at 30°C and 80% relative humidity, per GB/T 19411. Actual capacity depends on the model and operating conditions.

What refrigerants are used?

Common refrigerants are R410A and R32, with a GWP below 2100, as per ISO 817. The specific refrigerant type must be confirmed for each model.

What is the operating temperature range?

The unit operates between 5°C and 38°C. Below 5°C, frost may form on the coils, which can affect performance.

How is noise level measured?

Noise level is measured at a distance of 1 meter and ranges from 35 to 55 dB(A), according to ISO 3744. Verify the specific value for the model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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