Greenhouses & Polyhouses
Humidity and CO₂ regulation with the heat pulled out before it cooks the crop.
68,000 m³/h
Peak airflow per fan
Galvanized
Anti-corrosion build
No actuator
Gravity drop-hammer shutter
The problem
What goes wrong without it
- Solar gain inside a polyhouse can push internal temperature 15 °C above ambient by midday, stalling growth and scorching sensitive crops.
- Trapped humidity encourages fungal disease; depleted CO₂ limits photosynthesis in a sealed structure.
- Corrosive, constantly humid air destroys ordinary painted-steel ventilation equipment within a season or two.
The Ayzair approach
How we solve it
- Fan-and-pad tunnel ventilation: evaporative cooling pads on the inlet gable and Hammer exhaust fans on the opposite gable draw cooled air the length of the house.
- Hot-dip galvanized housings and stainless impellers survive continuous high-humidity operation where painted steel fails.
- The drop-hammer shutter seals tight when fans idle, preventing back-draught, pest and rain entry.
Recommended equipment
What we typically specify for greenhouses.
A starting point, not a fixed prescription — the final schedule depends on your building dimensions and duty cycle.
Free assessment
Let us size your greenhouses site.
Send the dimensions and what happens inside. We will return a complete equipment schedule with connected load and installed cost — free, within one working day.
Other industries
We also serve
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.