Product Category / Fans and Heaters

Fans and Heaters

The demands of farming are never-ending. Maintaining consistent grain quality is essential to long-term profitability and viability. PMR supplies a complete line of aeration and grain-conditioning systems to help maintain grain quality in any operation.

GSI Fans and Heaters

Having the right size of fan and drying system for your specific operation is key. Too much airflow can be as bad – sometimes even worse – than too little airflow.

PMR can supply and install a wide range of GSI fans and heaters to suit your requirements.

Choose from a variety of high efficiency vane axial, centrifugal, and inline centrifugal fans and heaters.

Designed to reduce costs and boost performance.

fans and heaters

Vane Axial Fans

For application requiring high airflow at static pressures below 6" (depending on bin diameter), GSI offers vane axial fans in 12" diameter (1 HP) through 28" diameter (15 HP). Vane axial fans 18" and smaller use cast aluminum blades. Vane axial fans 24" through 28" use durable composite airfoil blades that are lightweight for easy starting and function well in this type of environment.

The 12" through 28" (1-15 HP) units feature a 3450 RPM motor for increased fan performance and energy efficiency. Close fan blade tip clearance and straightening vanes provide maximum air flow and reduced turbulence to ensure smooth and consistent airflow. All 24" and 28" vane axial fans also include a durable plastic inlet venturi which funnels air more efficiently into the fan.

Inline Centrifugal Fans

Aeration jobs at high static such as with milo, wheat or rape seed require special consideration. Aerating tall hopper tanks presents another challenge. The inline centrifugal fan is designed to handle both of these applications effectively.

Suited for higher static pressures, beyond the performance range of vane axial fans, the inline centrifugal fan offers higher static pressure capabilities than a 1750 RPM centrifugal fan at a lower cost.

Inline centrifugal fans make less noise than vane axial fans at 3500 RPM due to the fan wheel being totally enclosed in the fan housing.

Inline Centrifugals can not be used with heaters due to their design.

fans and heaters
fans and heaters

Centrifugal Fans


Built with a heavy galvanized steel, scroll-type housing and inverted inlet venturi. A non-overloading backward inclined airfoil wheel provides high airflow with a long motor life. These fans operate at a low noise level and accommodate a variety of heaters for use on drying bins where higher capacities are required. Models are available from 5 - 50 HP with static pressures up to 11".


Designed to operate in static pressures up to 22". These fans are used primarily with tall tanks or small grains tanks with high resistance to airflow. 3500 RPM centrifugal fans can not be used with heaters due to their design.

Vane Axial Downstream Heater

For use as a medium to high temperature downstream on axial fans or with deluxe models as a low temperature, equilibrium or medium temperature burner on 1750 RPM centrifugal fans.

With capacities up to 3.0 million BTU/hr., our vane axial fan and heater combination provides the very best in high capacity grain drying. Vane axial heaters are available in 18" to 28" dia., liquid propane, propane vapor or natural gas models.

fans and heaters
fans and heaters

Upstream Heater

A low or medium temperature burner for use only upstream on 1750 RPM centrifugal fans. Capable of .3 to 1.1 million BTU/hr., and available in propane vapor or natural gas, perfect for the drying/aeration of rice, corn or other select grains.

Centrifugal Downstream Heater

For use downstream as a medium or high temp burner on 1750 RPM centrifugal fans. Not for use as a low temperature burner. Specially designed burners are adjustable for uniform heating temps with a choice of liquid propane, propane vapor or natural gas. Available for GSI 1750 RPM (10-40 HP) centrifugal models, the downwind centrifugal burner is capable of capacities up to 4.2 million BTU/hr.

fans and heaters

Welvent Heaters

The most important component of any crop store is the fan, it is the engine or the heart of the system.

Air movement is critical to the optimum operation of any storage and drying system.

The Welvent range is made up of both axial and centrifugal fan units, which means that the optimum fan can be selected for the job.

Fans are chosen to suit the volume and pressure requirements of the crop and system whilst giving consideration to other important factors such as noise, power availability and efficiency.

  • British Built
  • Heavy Duty
  • Precision Engineering
  • Reliable
fans and heaters

Welvent agricultural crop storage specialists for potatoes, grain and onions. Supplying both ambient and refrigeration equipment control systems.

Let’s Talk

PMR can assist you with everything from drive over drying floors,
drying spears, driers, fans &heaters, conveying & handling to testing equipment products.
Give our sales team a call today and let us find a solution together.