Zimmerman Tower Dryers


Zimmerman Tower Dryers

After their start in 1963, Zimmerman became the market leader in tower design; since becoming part of the GSI, in 2001, GSI has worked to continue this tradition of quality and performance. With a design that natively allows for easy heat recovery without the uneven heat issues of other dryers, along with a patented self cleaning divider floor and quiet operation, Zimmerman tower dryers give you the features you need.

Key Features

CAPACITIES/HR Up to 12,000 bph Dry & Cool @ 5 pt. removal
Operation Type Dry/Cool
Fuel LP or Natural Gas
Electrical 3 phase
Standard Grain Inverters
Standard Vacuum Cool Heat Recovery


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State of the art Controls

Functionality comes first when it comes to controls. The Allen Bradley CompactLogix PLC Controls communicating with the PanelView operator interface offers an easy-to-read large color graphical touch display that’s located on your dryer or remote with a few wires. You’ll have unmatched options and settings to get the exact performance you’re looking for from your system. These controls are specifically designed for Zimmerman Tower Dryers and allow for seamless integration with other grain system PLC controls, making your day to day easier.
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Grain Inverters

Eliminate over-dried grain and maximize drying efficiency and quality by using a GSI’s patented grain inverter. This system inverts all but the outside 2" (50.8 mm) of grain promoting higher test weights, maximum grain quality, and reduced fuel usage. The outside layer of wet grain is dried using the heat which would have otherwise escaped the dryer, keeping your operation energy efficient. A convenient clean-out door provides easy, quick maintenance.

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Static Moisture Sampler

Improve your accuracy with the static moisture sampler. Debris guards ensure a trash-free sample and delivers a uniform representative sample to the test chamber. A blower system gently moves the grain out of the chamber, cleaning it each cycle. Get the most accurate results as the moisture reading used to monitor/calculate discharge grain moisture is only taken while the grain is static and not flowing.

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WatchDog allows you to monitor and control your dryer from anywhere. Monitor and adjust moisture and temperature from your phone, tablet, or computer with ease.​
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Industry Best Emissions Control

Our emissions control features a tapered design to keep particulate in the dryer instead of in the air. Standard small .078” (1.98 mm) perforations are used to retain bees wings and particulate material, while even smaller .0625” (1.59 mm) perforations are used at the critical areas below the Grain Inverters and on the inside of the cooling area. Solid, non-perforated exterior sheets are used at the Grain Inverters and in the discharge section to minimize particulate escape.

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Standard Patented Accu-Trol Metering System

Zimmerman's field proven patented Accu-Trol is self-cleaning and has UHMW in all contact areas for lower horse power demand and increased longevity. Your grain travels a short distance with no damage on a standard stainless steel floor with a VFD drive for accurate, dependable operation.
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Tower Dryer Heat Reclaimer

GSI’s patented (US Patent No. 9,863,703) Heat Reclaimer technology is the first of its kind, giving you the ability to reuse the dryer’s heat, while minimizing debris build-up. The GSI Heat Reclaimer separates the hot, dry air and returns it into the drying process again, while simultaneously taking the cold, wet air and debris and discarding it via the open bottom.


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