Cleanroom HVAC and Air Handling Equipment

Horizontal Air Handling Unit

A floor-mounted linear air handler that arranges treatment components in an accessible horizontal airflow path.

Straight Airflow Path
Full-Side Service Access
Low Component Velocity
Flexible Section Length

Request a Quote Browse Products

Product Introduction

The horizontal air handling unit places dampers, filters, coils and fans in a straight line on a rigid floor base. The layout offers generous face area for filters and coils, helping reduce pressure loss and water carryover. Service doors can reach each section from one side, and the unit height can be kept below roof beams or service distribution. Draw-through and blow-through arrangements are available to suit coil control, fan heat and discharge requirements.

Key Features

A linear airflow path avoids abrupt internal turns and supports low component pressure drop.

Large filter and coil face areas improve service life and moisture separation.

Full-height side doors make each treatment section independently accessible.

Section lengths can be adjusted for coil access, sound attenuation and building column spacing.

Customer Product Concerns

Long floor-mounted equipment must balance low pressure drop with plant-room access, shipping limits and service clearances.

High coil face velocity carries condensate into the downstream fan section.A wider coil face and adequate service plenum reduce velocity and allow drainage.

One continuous casing cannot pass around plant-room columns or through delivery openings.Bolted shipping sections reassemble on a continuous aligned base frame.

Filters can only be changed from the wrong side of the plant room.Service handing and door positions are selected before manufacture.

A short discharge plenum creates uneven fan outlet velocity at the duct connection.A sized discharge section provides pressure recovery and a uniform duct interface.

Typical Applications

Cleanroom mechanical roomsPharmaceutical manufacturing HVACLaboratory air treatmentHospital supply-air systemsIndustrial clean facilities

Technical Parameters

Representative construction data for a floor-mounted horizontal AHU are provided below.

Core Material	Polyurethane foam or mineral-wool insulation in double-skin panels
Panel Thickness	40–70 mm insulated casing
Effective Width	900–4000 mm nominal unit width
Maximum Length	Up to 15000 mm in bolted horizontal shipping sections
Steel Facing Thickness	0.6–1.0 mm inner and outer panel skins
Core Density	40–43 kg/m³ polyurethane or 90–120 kg/m³ mineral wool
Thermal Conductivity	0.022–0.040 W/(m·K) depending on insulation
Surface Finish	Powder-coated galvanized outer skin with galvanized or stainless inner skin
Joint Type	Thermal-break frame with gasketed panels and bolted aligned base sections
Customization	Available based on the intended application and operating environment.

Available Options

Draw-through or blow-through arrangementSingle fan, twin fan or fan-wall sectionTop, side or end duct connectionsSound attenuator and discharge plenum modules

Planning a Horizontal Air Handling Unit specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

Talk to Our Team