Industrial and commercial fans at DAS Company cover the complete range of building and process ventilation beyond the small residential extract fan category — wall-mounted axial fans (200–800mm impeller diameters) for direct external wall extraction in warehouses, garages, factory production halls and commercial kitchens; centrifugal inline duct fans for ducted extract systems with longer pipe runs and higher static pressure requirements; roof-mounted extractor fans (axial upblast, centrifugal upblast and downblast) for whole-building roof extraction in warehouses, restaurants and manufacturing facilities; HVLS (High Volume Low Speed) ceiling fans (2–7 metre diameter) for large-volume warehouse and industrial hall air circulation; and ATEX explosion-proof fans for hazardous area Zone 1 and Zone 2 chemical, petrochemical and grain handling facilities.
DAS Company supplies industrial fans for HVAC contractors, building services engineers, mechanical contractors, manufacturing facility managers and warehouse operators across Europe — providing CE-marked products with documented airflow performance (m³/h or l/s at specified static pressure), motor specification (single-phase or three-phase, IE3/IE4 efficiency class), IP protection rating and certification compliance for the specific application environment. For projects requiring high-volume warehouse air circulation, energy-efficient EC motor extract, restaurant kitchen UL/EN 16282 compliant exhaust or ATEX-certified hazardous area ventilation, the correct fan specification is critical to safe and effective installation — our engineering team supports fan selection based on the application requirements.
Axial flow fans propel air parallel to the fan rotation axis — generating high airflow at low static pressure, the appropriate fan type for direct wall-mounted extraction where the fan exhausts air through the external wall without significant ductwork resistance. Standard impeller diameters cover 200mm, 250mm, 300mm, 400mm, 500mm, 630mm and 800mm — with corresponding airflow rates from 800 m³/h (200mm) to over 25,000 m³/h (800mm) at zero static pressure. Industrial axial wall fans are typically supplied with steel mounting plate (galvanised or powder-coated) including external weather louvre or protective grille, direct-drive motor (single-phase 230V or three-phase 400V depending on size), and thermal motor protection with built-in overload protection thermistor.
Common axial fan applications include warehouse and factory general ventilation (200mm to 500mm wall fans providing make-up air or exhaust at strategic wall positions), garage and workshop ventilation (250mm to 400mm for vehicle exhaust gas removal and welding fume extraction), commercial kitchen extract (300mm to 500mm for canopy hood exhaust where direct wall extraction is preferred over roof ducting), livestock and agricultural building ventilation (400mm to 800mm for high-volume animal housing air change), and industrial process exhaust (where contaminated process air must be removed from production areas). For installations requiring backdraught prevention (preventing cold air ingress when the fan is stopped), automatic shutter accessories are available — gravity-operated louvre blades that close when fan airflow stops.
Centrifugal fans propel air at 90 degrees to the rotation axis through a scroll housing — generating higher static pressure than axial fans at equivalent airflow, making centrifugal designs the appropriate fan type for ducted ventilation systems where airflow must overcome significant resistance from long duct runs, multiple bends, filtration and discharge silencers. Centrifugal duct fans are available in forward-curved (high airflow, moderate pressure, quieter operation — typical for HVAC ducted supply applications) and backward-curved (lower airflow, higher pressure, non-overloading motor characteristic — typical for industrial exhaust and dust collection ducted systems) impeller designs.
Inline centrifugal duct fans install directly within the ductwork — typically circular cross-section units with matching duct connection sizes (100mm, 125mm, 150mm, 200mm, 250mm, 315mm, 400mm) for direct installation in spiral steel ducting. Inline duct fans are widely used for commercial kitchen extract (high temperature variant), retail and hospitality general ventilation, multi-room residential apartment buildings with central extract systems, and supply air systems with filtration and heating coil pressure drop. Belt-driven centrifugal fans (motor and impeller separated, belt-driven through pulley arrangement) provide flexibility for non-standard airflow and pressure requirements — pulley sizing adjusts impeller speed to match the specific application performance, enabling field commissioning to optimise operating point.
Roof-mounted extract fans exhaust building air directly through the roof to atmosphere — the highest-airflow ventilation arrangement for warehouses, factories, restaurants and commercial buildings where wall extraction is impractical due to building scale or where roof extraction is the preferred architectural solution. Three principal configurations cover the application range. Roof axial extract fans (vertical-discharge axial impeller in weatherproof housing) provide cost-effective high-volume extract for general warehouse and factory ventilation — typical capacities 5,000 to 80,000 m³/h per unit. Centrifugal upblast roof fans (centrifugal impeller discharging vertically upward through weather hood) provide the standard arrangement for commercial restaurant kitchen extract — UL/EN 16282 compliant for restaurant grease laden vapor exhaust, NFPA 96 listed for fire-resistant ducted kitchen extract systems. Centrifugal downblast roof fans (centrifugal impeller discharging horizontally or downward) provide weather-protected extract for general industrial application — keeping the discharged airstream away from roof-mounted intake louvres and adjacent buildings.
Roof extract fan housings are typically spun aluminium (lightweight, corrosion-resistant, suitable for most general applications) or galvanised steel (higher mechanical robustness, suitable for industrial and exposed installations). Integrated roof curb accessories provide the structural mounting frame that creates a weather-tight seal between the fan and the roof penetration — essential for any roof extract installation, with curb height and dimension matched to the fan model. For installations requiring fan operation during fire conditions (smoke control, smoke extract), fire-rated roof fans (300°C/2 hr or 600°C/1 hr to EN 12101-3 smoke control standard) provide the certified high-temperature operation that life safety systems require.
HVLS (High Volume Low Speed) ceiling fans are the largest fans installed in commercial and industrial buildings — typically 2.4 to 7.3 metre diameter rotating at very low speed (50–80 RPM) to move massive air volumes through warehouses, manufacturing halls and large open-floor commercial buildings. The technical principle is fundamentally different from extract fan ventilation: HVLS fans circulate air within the building rather than exhausting it, creating gentle horizontal airflow at occupant level (1–2 m/s perceived airflow) that destratifies hot air accumulation at high level, evens out building-wide temperature differences and provides perceived cooling effect through evaporative cooling on occupants. The horizontal airflow pattern from HVLS fans can reduce summer building temperature feel by 4–8°C without air conditioning energy expenditure — significant operational cost saving in warehouse, distribution and manufacturing buildings where full air conditioning is economically impractical.
Winter operation reverses the airflow direction — gently destratifying hot air from heating systems that would otherwise accumulate at warehouse roof level (where it provides no benefit to occupants and increases heat loss through the roof). The destratification effect typically reduces heating energy consumption by 20–30% in heated warehouse buildings. HVLS fans are most commonly specified with direct-drive motor (EC or PMSM permanent magnet synchronous motor for energy efficiency and variable speed control) and aluminium aerofoil blades (5 or 6 blades, low-noise aerodynamic profile). Installation requires structural assessment of the building roof or supporting beams — HVLS fan total weight including blade assembly is typically 100–300 kg depending on diameter.
EC (Electronically Commutated) motor fans use brushless DC motor technology with integrated electronic speed control — providing up to 70% energy saving over conventional AC motor fans (PSC or shaded-pole induction motors) at equivalent airflow, with the additional benefit of continuous variable speed operation from 0–100% rated speed. EC motor fans are increasingly specified for continuous-operation applications where the energy cost saving over the equipment service life significantly exceeds the higher purchase cost — commercial building 24/7 extract, hospital and healthcare facility ventilation, data centre cooling fan systems and continuous-operation laboratory exhaust. The variable speed capability enables demand-controlled ventilation — fan speed automatically reduces during low-occupancy periods (overnight, weekends) and ramps to full output during peak demand, providing further energy saving beyond the base EC motor efficiency. EC motor fans are compatible with standard BMS protocols (0–10V analogue, Modbus RTU, BACnet) for centralised speed control and energy monitoring integration with building management systems.
ATEX fans (Atmosphères Explosibles, EU Directive 2014/34/EU) are certified for installation in hazardous area zones where flammable gas, vapour or dust accumulation creates an explosion risk — petrochemical refineries, chemical processing plants, oil and gas facilities, paint spray booths, grain handling and food milling, pharmaceutical solvent handling and flour milling. The certification covers fan construction to EN 14986 (design of fans working in potentially explosive atmospheres) with materials, motor construction, electrical components and spark prevention measures matched to the applicable hazardous area zone (Zone 1, Zone 2 for gas; Zone 21, Zone 22 for dust) and explosion group (IIA, IIB, IIC).
Common ATEX fan applications include chemical process exhaust (Zone 1 IIB T3 or higher rated centrifugal fans for solvent vapour and flammable gas extraction), paint spray booth extract (Zone 1 IIA T3 rated axial or centrifugal fans for organic solvent paint extract), petrochemical area ventilation (Zone 2 or Zone 1 rated wall and roof fans for refinery and tank farm building ventilation), grain elevator and feed mill dust extract (Zone 22 dust rated fans for grain dust and feed product handling), and pharmaceutical solvent handling (Zone 1 IIA T4 rated fans for ethanol and organic solvent process exhaust). Specification of ATEX fans is a regulated safety matter — DAS Company supplies ATEX fans only with documented certification, declaration of conformity and supporting safety documentation for the specific hazardous area classification of the installation.
Correct industrial fan specification requires assessment of five primary application parameters. Required airflow rate (m³/h or l/s) — calculated from the building volume and required air change rate, the contaminant load and dilution requirement, or the process exhaust hood capture velocity. Static pressure — the resistance to airflow that the fan must overcome, calculated from duct length, fitting losses, filter pressure drop and termination losses. For direct wall extract, static pressure is typically very low (<50 Pa); for long ducted extract systems, static pressure may exceed 500 Pa. Fan type — axial for high airflow and low pressure (wall and roof extract); centrifugal for high pressure and ducted systems; HVLS for in-building air circulation; ATEX for hazardous areas. Motor specification — single-phase (up to typically 1.5 kW) or three-phase (larger fans), with EC motor option for energy-efficient continuous-operation applications. Environmental rating — IP54 minimum for typical industrial use; IP55 or higher for outdoor exposure; ATEX certification for hazardous area installation; high-temperature smoke extract rating for life safety applications. DAS Company's engineering team provides fan selection support based on these parameters — calculating airflow and pressure requirements from application description and recommending the correct fan model from our supplier portfolio.
DAS Company provides competitive B2B pricing for industrial and commercial fans across Europe. Product categories with available pricing include axial wall fans (200mm through 800mm), centrifugal inline duct fans (100mm through 400mm connection size), forward-curved and backward-curved centrifugal fans (cabinet and inline configurations), roof axial extract fans, centrifugal upblast and downblast roof fans, HVLS ceiling fans (2.4m through 7.3m diameter), EC motor energy-efficient fans and ATEX certified fans for hazardous area applications. Volume pricing is available for warehouse, factory and commercial development project supply. Contact our engineering team for fan selection support and project quotations.
