Rooftop ventilators serve as the final stop in your facility’s airflow system. Specifically, their role is to expel unwanted air—hot, contaminated, or moisture-laden—and, as a result, make way for cleaner, cooler air to circulate.
As you can see, proper rooftop ventilation improves several key factors:
- Worker safety and comfort
- Compliance with OSHA and NFPA standards
- Energy efficiency
- Equipment longevity
Neglecting rooftop airflow can quickly lead to heat buildup, corrosion, airborne contaminants, and pressure imbalance across your ventilation system.
Overview of Roof Ventilator Fans
A rooftop ventilator fan is designed to mount directly on a building’s roof and exhaust air out of the facility. At Hartzell, we engineer roof ventilators with precision and durability—so they are capable of handling everything from corrosive fumes to high-volume particulate exhaust.
Types of Rooftop Ventilators
Upblast Roof Ventilators
These units discharge air upward and away from the roof, thereby minimizing recirculation. This makes them ideal for:
- Commercial kitchens
- Manufacturing plants
- Chemical processing facilities
Available in direct drive and belt drive models, these ventilators also excel in high-temperature or smoke control situations.
Swingout Upblast Roof Ventilators
Built for serviceability, these ventilators feature a swingout design that allows for easy access to the motor and impeller. This reduces downtime during maintenance.
Hooded Roof Ventilators
Enclosed in a weather-resistant hood, these units provide quiet, efficient air removal while simultaneously offering strong protection from rain and wind.
Fiberglass Roof Ventilators
Designed for corrosive or humid environments, these lightweight and durable ventilators are ideal for water treatment facilities, coastal plants, and chemical storage applications.
Applications of Rooftop Ventilators
Commercial Spaces
For spaces such as retail buildings, warehouses, restaurants, and office campuses, rooftop ventilators ensure occupant comfort and air quality while also meeting local building codes.
Recommended units include:
- Hooded Roof Ventilators for low-profile applications
- Upblast Belt Drive Models for high-volume exhaust needs
Industrial Environments
Industrial facilities demand rugged performance. Because of exposure to heat, grease, dust, and corrosive gases, your ventilation system needs to handle it all—consistently.
Top picks for industrial use include:
- Swingout Upblast Models for serviceability
- Fiberglass Roof Ventilators for corrosion resistance
- Direct Drive Upblast Ventilators for consistent, low-maintenance performance
Features to Consider in Rooftop Ventilation Systems
Energy Efficiency
To improve efficiency, look for EC motors and variable-speed drives to reduce energy costs without sacrificing performance.
Noise Levels
For noise-sensitive areas, it’s important to select ventilators with insulated hoods or low-vibration mounting.
Durability & Materials
To ensure long-term durability (even in harsh environments) choose industrial-grade construction with powder-coated steel, aluminum, or fiberglass.
Installation and Maintenance
Steps for Installing Roof Ventilator Fans
- Secure to a stable, vibration-resistant curb or base
- Install backdraft dampers or weather hoods as needed
- Seal joints to prevent air and water intrusion
- Align airflow direction with your system’s design specs
Maintenance Tips for Longevity
- Clean fan blades and housing regularly to prevent dust buildup
- Lubricate bearings and check for belt wear to ensure ongoing performance
- Test motor function and balance every 6–12 months for safety and efficiency
- Inspect for corrosion, vibration, or unusual noise
Summary of Benefits
- Boosts safety and regulatory compliance
- Reduces heat and airborne contaminants
- Enhances airflow and indoor air quality
- Protects equipment and structure
- Supports energy savings with efficient designs
Choosing the Right Rooftop Ventilator Fan
In conclusion, this guide clarifies your options and helps you evaluate your facility’s needs. If you have questions, need advice, or want a system assessment, reach out to our team for support.
With over 150 years of engineering expertise and the industry’s only five-year warranty, Hartzell Air Movement is committed to performance that lasts.
If you need a quick reference, download our Industrial Fan Selection Guide for a clear breakdown of fan types and how to choose the right one for your application.
Contact Us: Call 1-800-336-3267 or email info@hartzell.com.