Leading Inline Duct Fan Manufacturer in India
INTELLIFAN is a trusted Indian inline duct fan manufacturer, supplier, and exporter. We engineer advanced mixed-flow and centrifugal inline ventilation systems powered by high-efficiency motors, designed to drive clean indoor airflow across demanding duct runs.
From residential bathroom extraction to commercial kitchen exhausts, basement ventilation, hospital air handling, and hydroponic setups, our duct fans deliver higher static pressure, ultra-quiet acoustics, and reduced electricity bills.
Why Choose INTELLIFAN Duct Fans?
Precision Ventilation by an Indian Inline Duct Fan Manufacturer
Engineered to overcome air resistance and solve static pressure drop across long ducted networks.
An inline duct fan is an aerodynamically balanced ventilation fan installed directly inside circular or rectangular air ducts. Unlike traditional wall-mounted or ceiling exhaust fans that only extract air locally, an inline fan works within the ductwork to move air across extended horizontal and vertical runs without losing airflow velocity.
As a dedicated inline duct fan manufacturer in India, INTELLIFAN addresses the ventilation challenges of modern Indian urban architecture. High-rise residential apartments, compact commercial offices, hotel corridors, and basements often lack direct exterior wall access. Our inline ventilation fans generate the static pressure required to pull fresh air from the outside or force moisture, fumes, and stale contaminants through dozens of meters of duct bends and grilles.
Integrating electrical grade pure copper windings, thermal overload protection, vibration-damped casing, and precision impellers, our duct blowers provide lower energy draw and multi-speed adaptability for residential, commercial, and clean-room projects.
INTELLIFAN Inline Duct Fan Series
Browse standard industrial and commercial mixed-flow and centrifugal duct fan models built for continuous duty.
Mixed Flow Inline Fan Series
Compact, high-airflow mixed-flow inline duct fans engineered for quiet and efficient ducted ventilation.
INTELLIFAN 100mm Mixed Flow Inline Fan
| Model | IN ID100 |
| Duct Size | 4 Inch / 100 mm |
| Airflow | 204 m³/h (CMH) |
| Static Pressure | 132 Pa |
| Power | 40 Watt |
| Noise | 31 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 150mm Mixed Flow Inline Fan
| Model | IN ID150 |
| Duct Size | 6 Inch / 150 mm |
| Airflow | 450 m³/h (CMH) |
| Static Pressure | 280 Pa |
| Power | 60 Watt |
| Noise | 33 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 200mm Mixed Flow Inline Fan
| Model | IN ID200 |
| Duct Size | 8 Inch / 200 mm |
| Airflow | 840 m³/h (CMH) |
| Static Pressure | 350 Pa |
| Power | 100 Watt |
| Noise | 63 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 250mm Mixed Flow Inline Fan
| Model | IN ID250 |
| Duct Size | 10 Inch / 250 mm |
| Airflow | 1,400 m³/h (CMH) |
| Static Pressure | 489 Pa |
| Power | 150 Watt |
| Noise | 66 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 315mm Mixed Flow Inline Fan
| Model | IN ID315 |
| Duct Size | 12 Inch / 315 mm |
| Airflow | 2,200 m³/h (CMH) |
| Static Pressure | 690 Pa |
| Power | 200 Watt |
| Noise | 69 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
Centrifugal Inline Fan Series
Heavy-duty high-static pressure centrifugal inline blowers built for long duct runs and demanding ventilation setups.
INTELLIFAN 100mm Centrifugal Inline Fan
| Model | IN MC100 |
| Duct Size | 4 Inch / 100 mm |
| Airflow | 300 m³/h (CMH) |
| Static Pressure | 377 Pa |
| Power | 61 Watt |
| Noise | 62 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 150mm Centrifugal Inline Fan
| Model | IN MC150 |
| Duct Size | 6 Inch / 150 mm |
| Airflow | 700 m³/h (CMH) |
| Static Pressure | 339 Pa |
| Power | 88 Watt |
| Noise | 66 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 200mm Centrifugal Inline Fan
| Model | IN MC200 |
| Duct Size | 8 Inch / 200 mm |
| Airflow | 1,165 m³/h (CMH) |
| Static Pressure | 594 Pa |
| Power | 168 Watt |
| Noise | 70 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 250mm Centrifugal Inline Fan
| Model | IN MC250 |
| Duct Size | 10 Inch / 250 mm |
| Airflow | 1,255 m³/h (CMH) |
| Static Pressure | 596 Pa |
| Power | 185 Watt |
| Noise | 70 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
INTELLIFAN 315mm Centrifugal Inline Fan
| Model | IN MC315 |
| Duct Size | 12 Inch / 315 mm |
| Airflow | 1,740 m³/h (CMH) |
| Static Pressure | 720 Pa |
| Power | 223 Watt |
| Noise | 76 dB |
| Motor Grade | Electrical grade, pure copper |
| Protection | Thermal Protection |
| Warranty | 2 Years |
Inline Duct Fan Engineering Specifications at a Glance
High aerodynamic performance across every standard Indian duct size.
Millimeter Range
Standard circular sizes: 4", 6", 8", 10", and 12" duct connection collars.
Pascals Static Pressure
Overcomes duct bends, internal dampers, reducers, and HEPA filter media drops.
Pure Copper Motors
Electrical grade windings with built-in auto-reset thermal protection.
Rated Operating Hours
Precision-sealed ball bearings built for non-stop 24/7 commercial duty.
Why Engineers Choose Our Inline Ventilation Fans
Solving ventilation resistance with mixed-flow aerodynamic efficiency and acoustic dampening.
Mixed Flow & Centrifugal Options
Choose compact mixed-flow fans for whisper-quiet residential spaces, or high-head centrifugal blowers to conquer long, restrictive duct networks.
Acoustically Treated Housing
Streamlined internal guide vanes direct the air linearly, eliminating internal turbulence and drastically lowering operating decibel ratings.
Easy Drop-Down Servicing
The central motor and impeller body detach from the mounting bracket using quick-release latches, allowing maintenance without dismantling ductwork.
Pure Copper Reliability
100% electrical grade copper motor coils ensure cooler operating temperatures, prolonged motor life, and resistance to Indian voltage spikes.
Corrosion-Resistant Enclosures
Constructed using either flame-retardant industrial polypropylene or zinc-coated heavy gauge steel, preventing rust in humid coastal or kitchen environments.
Continuous 24/7 Duty Cycle
Built with class-leading thermal overload protection and sealed Japanese ball bearings to ensure trouble-free multi-year continuous operation.
Understanding Inline Duct Fan Technology
How mixed-flow inline blowers outperform standard axial and propeller fans.
Mixed-Flow vs. Axial Fans
Standard axial exhaust fans push air parallel to their shaft. While great for free-air delivery through a thin wall, their airflow crashes to near zero as soon as they face resistance from an air duct, elbow, or louvre.
INTELLIFAN's mixed-flow inline duct fans redirect air diagonally through curved diagonal blades. This accelerates the air, imparting both radial and axial velocity. As a result, the air retains its CFM rate even through 20+ meters of ducting, multiple 90-degree bends, and air terminal devices.
- High static pressure resilience: Maintains airflow across long ducted corridors.
- Compact inline profile: Fits within shallow false ceiling drops (180mm to 350mm).
- Linear discharge: Avoids eddy currents and minimizes vibration.
Thermal Protected Pure Copper Motors
Conventional ventilation fans often use lower-grade aluminum or copper-clad wiring prone to overheating under prolonged loads. INTELLIFAN uses heavy-duty, electrical grade pure copper windings built for round-the-clock ventilation duty.
Pure copper significantly lowers electrical resistance, dissipates heat more effectively, and enhances overall motor efficiency. Combined with integrated auto-reset thermal protection:
- Overheat Safeguard: Automatically shuts off if internal temperatures cross safety thresholds, preventing burnout.
- Consistent Torque: Maintains steady static pressure delivery without motor bog-down.
- Extended Service Life: Minimizes coil degradation and ensures stable operation for 50,000+ hours.
Inline Duct Fan vs. Conventional Ventilation Systems
Evaluate how ducted inline ventilation transforms building air management.
| Parameter | INTELLIFAN Inline Duct Fan | Traditional Wall/Window Exhaust Fan | Ceiling Mount Local Exhaust Fan |
|---|---|---|---|
| Installation Flexibility | Anywhere along the duct run, hidden inside false ceilings | Strictly external wall or window pane only | Ceiling face in the immediate room only |
| Static Pressure Generation | High (132 Pa to 720 Pa) for long duct pipes | Very Low (20 Pa to 40 Pa); stalls easily | Low to Moderate (40 Pa to 80 Pa) |
| Noise Level in Living Space | Whisper quiet (fan can be located away from the room) | Loud motor and blade chop audible inside the room | Moderate noise generated directly overhead |
| Multi-Point Extraction | Yes; one inline fan can exhaust multiple rooms via dampers | No; requires a dedicated wall fan per room | No; single-room extraction only |
| Fresh Air Supply Capability | Yes; pulls filtered fresh air from exterior louvres | No; exhaust only | No; exhaust only |
| Motor Reliability | Electrical grade pure copper with thermal protection | Standard inefficient shaded-pole motor | Basic AC induction motor |
Applications of INTELLIFAN Inline Duct Fans
Engineered to satisfy residential, commercial, industrial, and clean-air ventilation demands.
How to Choose the Best Inline Duct Fan for Your Project
Follow this engineering checklist to select the exact model, collar size, and motor power.
1. Calculate Required Airflow (CFM / CMH)
Determine the room volume (Length × Width × Height in meters) and multiply by the recommended Air Changes per Hour (ACH):
- Offices & Living Areas: 4 to 6 ACH
- Residential Bathrooms & Kitchens: 8 to 12 ACH
- Commercial Kitchens, Gyms & Smoking Rooms: 15 to 30 ACH
Total CMH required = Volume (m³) × Recommended ACH.
2. Factor in Static Pressure Drop
Air passing through flexible or rigid ductwork encounters friction. Every 90° bend, backdraft shutter, supply diffuser, and inline filter adds resistance:
- Straight Rigid Spiral Duct: ~1 to 2 Pa per meter
- Flexible Aluminum Ducting: ~3 to 5 Pa per meter
- 90° Elbow / Bend: ~10 to 25 Pa drop each
- Carbon / HEPA Filter Media: ~100 to 250 Pa drop
Choose a fan whose performance curve delivers your required CFM at the calculated total Pascal drop.
3. Select Mixed-Flow vs Centrifugal
Match the impeller design to the layout and resistance level:
- Mixed-Flow (IN ID Series): Compact, whisper-quiet, lightweight polymer housing. Best for false ceilings, apartments, clinics, and medium duct lengths.
- Centrifugal (IN MC Series): High static pressure (up to 720 Pa). Built for commercial kitchens, long vertical riser ducts, and systems with multiple bends.
4. Evaluate Noise & Location
To ensure silence inside living or working spaces:
- Position the inline fan midway along the duct run rather than directly behind the room's ceiling intake grille.
- Use acoustic insulated flexible ducting on the fan's discharge side to absorb residual sound waves.
- Install anti-vibration rubber hangers to isolate structural vibration from the ceiling slab.
Have a Duct Ventilation Requirement? Let’s Talk.
Contact INTELLIFAN for immediate wholesale quotes, product specifications, bulk dealer pricing, commercial HVAC supply, and custom OEM manufacturing requirements.
Manufacturer Support for HVAC Contractors, OEM & Dealers
End-to-end technical documentation, reliable project supply, and private labeling.
HVAC Consultants & MEP Contractors
We work directly with HVAC designers, MEP contractors, interior turnkey firms, and builders across India. We supply certified performance curves, static pressure vs. CFM charts, CAD layout files, and electrical schematics to simplify project sign-offs.
Whether you need 20 units for a boutique hotel or 500 units for a commercial IT park in Bengaluru, Pune, Hyderabad, or Noida, INTELLIFAN provides consistent build quality and on-time project dispatches.
Submit Project BOM for QuoteOEM & Private Label Manufacturing
Looking to expand your HVAC or air treatment brand with inline ventilation equipment? INTELLIFAN provides comprehensive OEM and private label manufacturing services.
From customized airflow ratings, private label brand printing, custom voltage drives, and unique packaging to tailored motor selections, we manufacture products to your precise technical and commercial specifications.
Discuss Private Label PartnershipAbout INTELLIFAN & Greenland Solutions
Made in India engineering excellence since 2015.
INTELLIFAN is a flagship brand of Greenland Solutions, an Indian engineering and manufacturing enterprise established in 2015 with its primary production hub in Sahibabad Industrial Area, Ghaziabad, Uttar Pradesh.
Founded on a deep foundation in high-efficiency DC, BLDC, and AC fan motor engineering, Greenland Solutions has grown into a respected ventilation technology partner for residential, institutional, commercial, and industrial markets across India.
Our complete ventilation portfolio encompasses Inline Duct Fans, Energy Recovery Ventilators (ERV), Fresh Air Ventilation Filtration Units, BLDC Ceiling Fans, Centrifugal Duct Blowers, and Air Distribution Diffusers & Grilles. Every product is backed by stringent quality testing, dynamic impeller balancing, and dedicated pan-India after-sales support.
Frequently Asked Questions About Inline Duct Fans
Clear answers to common engineering, installation, and procurement questions.
Who is the best inline duct fan manufacturer in India?
What is the difference between mixed-flow and centrifugal fans?
Are INTELLIFAN motors pure copper?
Ready to Upgrade Your Ventilation? Talk to Our Engineers.
Get in touch with INTELLIFAN for technical sizing support, model recommendations, bulk price quotes, or dealer inquiries across India.
