Quiet airflow,
where people live and work.
Hundreds of factory-assembled cooling devices around the world rely on AFI SML smartfans™ and STEALTHFANS™ — the right answer to climate change, urban density and the strict acoustic limits of hospitals, schools and residential communities.
A changing climate, a denser city, a quieter machine.
Food processing and HVAC industries are challenged by climate change, the increase of population and concentration in urban areas. Our fans are successfully installed and operating in hundreds of factory-assembled cooling devices, providing the highest levels of efficiency. Our patented, field-tested low-noise STEALTHFANS fan is the right answer to mitigate the effects of noise and vibration in very sensitive installations like hospitals, schools and residential communities.
Rising ambient temperatures and longer cooling seasons push factory-assembled chillers and rooftop units harder every year. Our fans hold their efficiency curve at peak summer duty.
Equipment now sits on hospital roofs, school courtyards and apartment blocks. Compact, lightweight fans retrofit into existing fan rings without structural reinforcement.
Patient wards, classrooms and residential balconies demand strict acoustic envelopes. STEALTHFANS deliver low sound power without trading away airflow or efficiency.
Two fan platforms for factory-assembled cooling.
From package chillers and rooftop units to the noise-sensitive installations of hospitals, schools and dense urban communities — each series answers a precise operating profile.
SML Series — Package chillers, rooftop units & cooling towers
The SML smartfans™ series is the workhorse of factory-assembled cooling devices: package chillers, dry coolers, rooftop air handlers and small cooling towers. Aluminum or FRP airfoils, adjustable pitch and a fast-assembly conical bushing make it the fan of choice for OEMs delivering hundreds of units per year — with the highest efficiency in its diameter class.
- Optimised for factory-assembled cooling units
- Aluminum or UV-resistant FRP airfoils
- Adjustable pitch · fast OEM assembly
Hospitals, schools, communities — stealthfansTM answers.
The stealthfansTM series is the fruit of a two-year AFI research program and represents the most advanced product in the field of very low-noise axial fans for HVAC and food-industry cooling. It has resolved the big handicaps that prevented low-noise axial fans from spreading: it is the only series that combines low noise with high efficiency, low weight, reduced axial space requirement and a cost comparable to a regular fan — letting OEMs offer their factory-assembled equipment with a very low-noise option as standard, not premium.
Better than the average regular-noise fan — power consumption stays low even when operating in low-noise mode on rooftop chillers and HVAC units.
Lighter than a standard axial fan of equal duty, reducing structural load on hospital, school and residential rooftop installations.
Reduced axial footprint allows STEALTHFANS to be retrofitted into existing factory-assembled equipment with minimal modification.
Comparable in cost to a regular-noise fan — letting OEMs offer low-noise as the standard option, not a premium upgrade.
Engineering details
Three blade profiles of particular shape and width can be combined with the chosen number of blades to bias each installation toward maximum noise reduction or maximum efficiency. Any diameter between 6′ and 40′ is available for clockwise or counterclockwise rotation. The hot dip galvanized hub disc carries an epoxy-coated central boss; airfoils are aluminum alloy or UV-resistant antistatic FRP, with a maintenance-free stainless steel leading-edge sheet for wet cooling tower service. Blade attachments are hot dip galvanized steel and aluminum alloy, with optional polyurethane coating; geomet-protected steel fasteners are standard, with stainless steel available on request. Operating range: −45 °C to +80 °C.
Send us the duty data — we'll send back airflow your neighbours won't hear.
Our engineering team will analyse your factory-assembled units, evaluate acoustic constraints and outline a retrofit or OEM plan tailored to your production line.