Industrial-grade airflow where ventilation is non-negotiable.
Hammer Exhaust Fans — Heavy-Duty Industrial Ventilation
A high-capacity industrial ventilation system designed to expel large volumes of air efficiently — trusted across poultry farms, greenhouses, factories and warehouses.
68,000m³/h
Max airflow
15
Model variants
1750mm
Largest size
<70dB
Quiet operation
15 models
The full exhaust fans range.
Every model with its own spec sheet. Tap any card for full technical data, dimensions and pricing.
Every model in the range, largest first.
Values are nominal air volume in m³/h at standard test conditions. Full figures are in the specification table on this page.
Not sure which model?
We size it for you, free.
Picking from a table is guesswork. Send us the floor area, the roof height and what happens inside the building, and our engineering team will tell you exactly which model — and how many — you need. No charge, no obligation, one working day.
Overview
Hammer Exhaust Fans
The Ayzair Hammer Exhaust Fan delivers rapid air exchange where effective circulation is critical to productivity, comfort and animal welfare. Fifteen model variants span 200 mm to 1750 mm, so the fan can be matched precisely to your building volume and duty cycle — from a 30 m² workshop to a 5,000 m² poultry shed.
Construction is heavy-gauge hot-dip galvanized steel, riveted at every load-bearing joint, with a five-blade precision-balanced stainless steel impeller that delivers high static pressure with minimal turbulence. An industrial V-belt drive isolates the motor from the impeller — quieter, longer-lasting and easy to tension.
The self-actuating drop-hammer shutter is the signature of the design: aluminium louvres open under airflow and close tight under gravity. No motor, no actuator, no failure points — and a positive seal against reverse airflow, dust ingress, rain and pest entry when the fan is off.
Engineering
Why plants specify exhaust fans.
8 reasons the range holds up in continuous industrial service.
High airflow capacity
Moves very large volumes of air for rapid air exchange in warehouses, poultry houses and greenhouses.
Auto shutter mechanism
The drop-hammer system opens louvres on start-up and closes them tight when off — blocking dust, rain and insects.
Energy efficient
Belt-driven design delivers low energy consumption relative to airflow — efficient for high-volume continuous duty.
Improves air quality
Removes heat, moisture, ammonia and CO₂, supporting healthier environments for animals, workers and plants.
Durable construction
Heavy-gauge galvanized / stainless steel with anti-corrosion coating — built for harsh livestock and coastal sites.
Reduces heat stress
Maintains optimal temperatures, preventing heatstroke in livestock and equipment overheating in industrial setups.
Low noise operation
Engineered to run quietly despite high airflow output — comfortable for staff and livestock alike.
Easy maintenance
Simple design with fewer moving parts — service is fast, predictable and cost-effective over the product life.
Every angle
A closer look at the build.
Full data sheet
Complete technical specifications.
Request a quotation — bulk-order pricing available for poultry and greenhouse projects.
| Model | Size (mm) | Dia. (in) | Air volume (m³/h) | Noise (dB) | Speed (rpm) | Power (kW) | Voltage |
|---|---|---|---|---|---|---|---|
| Ayzair-1750 | 1750 × 1750 × 450 | 62 | 68,000 | 70 | 400 | 1.5 | 380V |
| Ayzair-1530 | 1530 × 1530 × 400 | 52 | 57,000 | 70 | 450 | 1.2 | 380V |
| Ayzair-1380 | 1380 × 1380 × 400 | 50 | 44,500 | 65 | 450 | 1.1 | 380V |
| Ayzair-1220 | 1220 × 1220 × 400 | 48 | 37,000 | 60 | 450 | 0.75 | 380V |
| Ayzair-1100 | 1100 × 1100 × 400 | 42 | 34,000 | 60 | 450 | 0.55 | 380V |
| Ayzair-1060 | 1060 × 1060 × 400 | 36 | 32,000 | 60 | 450 | 0.55 | 380V |
| Ayzair-1000 | 1000 × 1000 × 400 | 36 | 30,000 | 60 | 450 | 0.55 | 380V |
| Ayzair-900 | 900 × 900 × 400 | 32 | 27,000 | 55 | 450 | 0.37 | 380V |
| Ayzair-800 | 800 × 800 × 300 | 30 | 13,000 | 60 | 960 | 0.25 | 380V |
| Ayzair-700 | 700 × 700 × 300 | 28 | 10,000 | 60 | 960 | 0.25 | 380V |
| Ayzair-600 | 600 × 600 × 300 | 24 | 8,000 | 55 | 960 | 0.25 | 380V |
| Ayzair-500 | 500 × 500 × 300 | 20 | 5,000 | 55 | 1400 | 0.25 | 380V |
| Ayzair-400 | 400 × 400 × 300 | 16 | 2,500 | 55 | 1400 | 0.25 | 380V |
| Ayzair-300 | 300 × 300 × 200 | 10 | 1,500 | 50 | 2200 | 0.15 | 220V |
| Ayzair-200 | 200 × 200 × 170 | 6 | 1,000 | <60 | 2200 | 0.15 | 220V |
Belt-driven heavy duty construction on 900 mm and above. All values are nominal at standard test conditions; specifications subject to change without notice.
← Swipe the table sideways to see all columns
Where it fits
Built for the spaces where air matters.
Get a quotation
Tell us about the building.
Share the area, roof height and what happens inside. Our engineering team sizes the right number and configuration of units — at no cost — and comes back within one working day.
Free engineering sizing — No charge, no obligation.
24-hour response — An engineer, not a call centre.
Pan-India supply & export — Manufactured in Pune, delivered worldwide.
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Answers
Exhaust Fans — frequently asked questions
Cannot find what you need? Call +91 80871 10156 or WhatsApp us — an engineer, not a call centre, picks up.
Ask on WhatsAppHow do I size an exhaust fan for my shed?
Calculate room volume (L × W × H in m³) and multiply by the required air changes per hour for your application — poultry sheds typically need 60+ ACH, warehouses 6–15 ACH. That gives the m³/h rating required, then pick the model or number of fans that meets it. Send us your dimensions and we will size it for you.
What is a drop-hammer shutter?
It is a gravity-operated louvre system. Airflow from the running fan pushes the aluminium louvres open; when the fan stops, gravity drops them shut. Because there is no motor or actuator involved, there is nothing to burn out — and the closed louvres block reverse airflow, dust, rain and pests.
Are these fans suitable for poultry farms?
Yes — poultry ventilation is the primary application. The galvanized and stainless construction with anti-corrosion coating withstands ammonia-laden air, and the high airflow removes heat, moisture, ammonia and CO₂ to control heat stress and improve bird welfare and yield.
Single-phase or three-phase?
Models from 400 mm upward run on 380 V three-phase. The 200 mm and 300 mm models run on 220 V single-phase.
How is the fan installed?
Four steps: site survey to size the fan, frame the wall cut-out to model dimensions with reinforcement for fan weight, bolt to frame and weather-seal the perimeter ensuring the shutter clears, then wire to a rated supply via a local isolator and test airflow direction.
Also in the range
Other Ayzair product families.
Next step
Let us size the right system for your building.
Share your floor area, roof height and what happens inside. A member of our engineering team will return a no-obligation quotation within 24 hours.