Cleanroom HVAC and Air Handling Equipment

Hygienic Air Handling Unit

A cleanable air handler with corrosion-resistant inner surfaces, drainable wet sections and removable components for hygiene-sensitive facilities.

Drainable Wet Sections
Corrosion-Resistant Interior
Removable Treatment Components
Accessible Cleanable Surfaces

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Product Introduction

The hygienic air handling unit emphasizes internal access, drainage and material compatibility wherever treated air may affect sensitive occupants or products. Smooth metal lining covers insulation and frame cavities, service doors provide access to both faces of coils and filters, and condensate pans extend beneath the complete coil and eliminator assembly. Fans are selected without belt debris in the airstream, and seals use closed-cell materials that do not retain moisture. The result is a serviceable unit for hospitals, food processing and hygiene-critical manufacturing.

Key Features

Smooth corrosion-resistant inner skins isolate insulation and frame cavities from the air path.

Coil sections use fully drainable pans and accessible eliminators to control water carryover.

Pull-out filters, coils and service panels reduce inaccessible surfaces during periodic cleaning.

Direct-drive fans remove belts and pulleys from the treated airstream.

Customer Product Concerns

Hygienic air treatment fails when moisture, retained debris or inaccessible surfaces remain inside the equipment between maintenance intervals.

Condensate remains at the far end of a flat drain pan.A multi-directional sloped pan drains the complete coil footprint toward a trapped outlet.

Fibrous insulation is exposed at panel edges or service openings.Continuous metal inner skins and sealed panel joints isolate the insulation from the air stream.

The downstream coil face cannot be inspected without dismantling the unit.Dedicated service sections and removable eliminators provide access to both sides of wet components.

Belt particles enter supply air from the fan section.Direct-drive plug fans or EC fan arrays eliminate belt wear inside the casing.

Typical Applications

Hospital operating departmentsPharmaceutical productionFood and beverage clean processingClinical laboratoriesPersonal-care manufacturing

Technical Parameters

Representative construction data for a hygiene-oriented air handling unit are shown below.

Core Material	Non-hygroscopic closed-cell polyurethane or sealed high-density mineral-wool insulation
Panel Thickness	50–70 mm hygienic double-skin casing
Effective Width	1000–3800 mm nominal casing width
Maximum Length	Up to 12000 mm in cleanable modular sections
Steel Facing Thickness	0.8–1.2 mm internal liner and 0.6–1.0 mm external skin
Core Density	42–45 kg/m³ polyurethane or 90–120 kg/m³ mineral wool
Thermal Conductivity	0.022–0.040 W/(m·K), based on selected casing insulation
Surface Finish	Smooth 304 stainless-steel or coated galvanized interior with powder-coated exterior
Joint Type	Flush sealed panel joints with closed-cell gaskets and radiused internal transitions
Customization	Available based on the intended application and operating environment.

Available Options

304 or 316L stainless-steel inner liningUV-resistant outdoor coatingRemovable coil and fan assembliesBag, compact and absolute-filter housings

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