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Sizes
Sizes range from 36 to 72 in (915 to 1830 mm).
Airflow
Delivers fresh air where it is needed most.
Air Exchange
Engineered to support air exchange in parlors and specialized barn areas.
Trusted Worldwide
Trusted by farms worldwide for fresh-air injection performance.
What Does the Positive Pressure (Tonair) Fan Do?
The Topcool Positive Pressure (Tonair) Fan is designed to inject fresh air into livestock facilities, creating a steady supply of clean air where natural ventilation or exhaust systems alone may not be sufficient. By introducing fresh air, the Tonair Fan improves air exchange, reduces humidity, and helps maintain a healthier environment for both animals and workers. It is especially effective in specialized ventilation systems where balanced airflow is essential for optimal barn performance.
The Positive Pressure Fan is commonly installed in:
• Milking parlors
• Holding pens
• Calf barns
• Long tunnel-ventilated dairy barns
• Other areas requiring targeted fresh air injection
Additional benefits include:
• Improves fresh air distribution in difficult-to-ventilate areas.
• Helps reduce humidity in enclosed spaces.
• Supports balanced airflow in tunnel-ventilated barns.
• Reduces the workload on exhaust fans in long barn layouts.
• Available with variable speed options for greater energy efficiency.
What Does the Positive Pressure (Tonair) Fan Do?
The Topcool Positive Pressure (Tonair) Fan is designed to inject fresh air into livestock facilities, creating a steady supply of clean air where natural ventilation or exhaust systems alone may not be sufficient. By introducing fresh air, the Tonair Fan improves air exchange, reduces humidity, and helps maintain a healthier environment for both animals and workers. It is especially effective in specialized ventilation systems where balanced airflow is essential for optimal barn performance.
Milking Area
• Milking parlors
• Holding pens
• Calf barns
• Long tunnel-ventilated dairy barns
• Other areas requiring targeted fresh air injection
Retrofit Projects
Engineered to support air exchange in parlors and specialized barn areas.
Built to Perform. Backed to Last.
Tonair fans are trusted by dairy producers around the world to deliver results where it matters.
Sizes
Sizes range from 36 to 72 in (915 to 1830 mm).
WARRANTY
3-year on the entire fan
5-year on the blades
10-year on frame and housing
TESTED
AMCA & BESSLAB
Built to Perform. Backed to Last.
WARRANTY
3-year on the entire fan
5-year on the blades
10-year on frame and housing
CERTIFIED
CSA & CE
Tonair fans are trusted by dairy producers around the world to deliver results where it matters.
Key Benefits
Better airflow. Better comfort. Better results.
High Volume Injection
Delivers fresh air to the areas that need it most.
Reduce Fly Nuisance And Toxic Gases
Supports cleaner air exchange to help reduce flies, gases, and stale air.
Improve Overall Health
Creates a more uniform environment to help reduce animal stress.
Tailored For Your Needs
A range of options and configurations to fit your barn and performance goals.
Sizes
Available from 36 to 72 in, with sizing options for specialized fresh-air injection needs.
Motor And Drive
Available in direct drive and belt drive options, so you can choose the system that best fits your operation.
Insulated Shutters
Safety guards and shutter options help manage airflow, protect the barn, and support reliable operation.
Part Of A Complete Cooling System
Tonair fans inject fresh air into specialized barn areas where air exchange is needed.
Tonair Fans
Exhaust Fans
