Editorial Technical Reference

Air Handling Unit (AHU)

This page explains how Air Handling Unit (AHU) is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

An Air Handling Unit (AHU) is a component of a cleanroom environmental control system.

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Product Specifications

Technical details and manufacturing context for Air Handling Unit (AHU)

Definition
An Air Handling Unit (AHU) is a component of a cleanroom environmental control system. It regulates air temperature, humidity, filtration, and pressure to supply clean, conditioned air for sensitive manufacturing processes such as semiconductor, pharmaceutical, or biotechnology production. The AHU draws return air from the cleanroom and/or fresh outside air, then conditions it through filters (e.g., HEPA/ULPA) for particulate removal, heating and cooling coils for temperature control, and humidifiers/dehumidifiers for moisture regulation. A fan circulates the conditioned air through ductwork back into the cleanroom. Key parameters include airflow capacity (1000–50000 m³/h), static pressure (300–2000 Pa), cooling capacity (10–500 kW), heating capacity (5–300 kW), humidification capacity (5–200 kg/h), filtration efficiency (H13–H14 per EN 1822), temperature control accuracy (±0.5 °C), humidity control accuracy (±3 % RH), supply voltage (380–480 V AC), power consumption (5–150 kW), operating temperature range (-10–50 °C), operating humidity range (10–90 % RH), enclosure protection rating (IP54–IP55), and casing material (stainless steel 304). These values are reference ranges; verify model-specific values with the manufacturer. The AHU is typically constructed from galvanized steel or stainless steel for critical zones. Standards such as ISO 580, EN 1886, EN 1822, IEC 60038, IEC 60529, and ASTM A240 are used for testing and verification. Selection depends on cleanroom class, room volume, and process requirements. Maintenance signals include pressure drop across filters, temperature/humidity deviations, and unusual noise. Failure boundaries include loss of filtration integrity, motor failure, or control system malfunction. Always confirm specifications and compliance with the legal manufacturer or supplier.
Working Principle
The AHU draws in return air from the cleanroom and/or fresh outside air. It conditions the air by passing it through filters (e.g., HEPA/ULPA) to remove particulates, heating and cooling coils to adjust temperature, and humidifiers/dehumidifiers to control moisture. A fan then circulates the conditioned air through ductwork back into the cleanroom, maintaining the required environmental conditions.
Common Materials
Galvanized Steel, Stainless Steel (for critical zones)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Airflow Capacity1000–50000 m³/hSelect based on cleanroom class and room volume.ISO 580
Static Pressure300–2000 PaMust overcome duct and filter resistance.ISO 580
Cooling Capacity10–500 kWDetermines sensible and latent heat removal.EN 1886
Heating Capacity5–300 kWFor winter or reheat conditions.EN 1886
Humidification Capacity5–200 kg/hMaintains cleanroom relative humidity.EN 1886
Filtration EfficiencyH13–H14 HEPAH13 for ISO 5–8, H14 for ISO 3–4.EN 1822
Temperature Control Accuracy±0.5 °CTighter tolerance for critical processes.EN 1886
Humidity Control Accuracy±3 % RHCritical for semiconductor and pharma.EN 1886
Supply Voltage380–480 V ACThree-phase, 50/60 Hz.IEC 60038
Power Consumption5–150 kWIncludes fan, cooling, heating, controls.EN 1886
Operating Temperature Range-10–50 °CAmbient conditions for AHU installation.EN 1886
Operating Humidity Range10–90 % RHNon-condensing.EN 1886
Enclosure Protection RatingIP54–IP55IP55 for outdoor installation.IEC 60529
Casing Material304 SSStainless steel for corrosion resistance.ASTM A240

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
  • Fan Section
    Provides the motive force to draw in and circulate air through the unit and ductwork.
    Material: Steel housing, aluminum/steel impeller
  • Filter Section
    Houses pre-filters and final HEPA/ULPA filters to remove airborne particulates.
    Material: Galvanized steel, filter media (glass fiber, PTFE)
  • Heating/Cooling Coil Section
    Conditions the air temperature using hot water, steam, or refrigerant.
    Material: Copper tubes, aluminum fins
  • Humidifiers
    Adjust the moisture content of the conditioned air.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Air Handling Unit (AHU).

Air Handler

Applied To / Applications

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

Cleanroom Environmental Control System
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 2000 Pa static pressure capability
flow rate: 500-50,000 CFM (adjustable based on fan configuration)
temperature: 15-30°C (typical operating range), -10 to 50°C (extended range)
filtration efficiency: MERV 13 to HEPA H14 (for cleanroom applications)
Media Compatibility
✓ Conditioned air in pharmaceutical cleanrooms ✓ Laboratory ventilation with controlled humidity ✓ Electronics manufacturing clean environments
Unsuitable: Corrosive chemical fume exhaust without specialized coating
Sizing Data Required
  • Required air volume (CFM) for space
  • Cleanroom classification (ISO Class)
  • Heat load calculation (kW) for cooling/heating capacity

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing Failure
Cause: Inadequate lubrication, contamination from dust/moisture, misalignment, or excessive vibration leading to wear and eventual seizure or overheating.
Coil Fouling
Cause: Accumulation of dirt, debris, or biological growth on cooling/heating coils, reducing heat transfer efficiency and increasing pressure drop, often due to poor filtration or lack of regular cleaning.
Maintenance Indicators
  • Unusual grinding, squealing, or rattling noises from the fan or motor section, indicating potential bearing wear or mechanical issues.
  • Significant reduction in airflow or inconsistent temperature/humidity output, suggesting blockages, coil fouling, or fan/motor performance degradation.
Engineering Tips
  • Implement a proactive lubrication schedule using manufacturer-recommended greases, and monitor vibration levels with sensors to detect early bearing wear.
  • Regularly inspect and replace air filters, and schedule periodic coil cleaning to maintain optimal heat exchange and airflow, preventing efficiency losses and strain on components.

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 16890:2016 - Air filters for general ventilation ANSI/ASHRAE 52.2-2017 - Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size DIN EN 1886:2007 - Ventilation for buildings - Air handling units - Mechanical performance

Quoted from the published standard.

Manufacturing Precision
  • Panel flatness: +/- 1.5 mm per meter
  • Air leakage: ≤ 0.75% of design airflow at 400 Pa pressure differential
Quality Inspection
  • Air leakage performance test per EN 1886
  • Thermal performance verification per ISO 5801

Manufacturers of Air Handling Unit (AHU)

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

Yizhong Aluminium
Guangdong, CN
Also makes: Air Handling Unit, Gate Assembly
Listed on the company's own website · profile compiled by CNFX from public sources
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Frequently Asked Questions

What is the primary function of an AHU in a cleanroom?

The AHU conditions and circulates air to maintain temperature, humidity, filtration, and pressure within specified limits, ensuring a clean environment for sensitive manufacturing processes.

How do I select the correct AHU for my cleanroom?

Selection is based on cleanroom class, room volume, required airflow, static pressure, cooling/heating loads, and humidity control needs. Consult the manufacturer with these parameters to determine the appropriate model.

What maintenance is required for an AHU?

Regular maintenance includes replacing or cleaning filters, inspecting coils and fans, checking control systems, and monitoring pressure drops and environmental parameters. Follow the manufacturer's service schedule.

What standards apply to AHU testing and performance?

Relevant standards include ISO 580 for airflow and pressure, EN 1886 for thermal and humidity performance, EN 1822 for HEPA/ULPA filters, IEC 60038 for voltage, IEC 60529 for enclosure protection, and ASTM A240 for stainless steel. Verify compliance with the supplier.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

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

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