Support Resources

Our resources consist of videos and downloadable files to help you better understand Schaefer products. Please contact us if you need more information.

Frequently Asked Questions

If your question is not answered on this page, please email us at or call us during 8 a.m. to 5 p.m. central time, Monday thru Friday at (320) 251-8696 or (800) 779-3267.

WayCool® and Pro-Kool® Portable Evaporative Coolers

How does evaporative cooling work?
Evaporative cooling is the same process your body uses to cool itself. When you perspire, and air moves across your skin, a portion of the perspiration (water) evaporates. Evaporation requires heat to change liquid water-to-water vapor and this heat is taken from your skin, producing the cooling effect. In an evaporative cooler, the cellulose cooling pads take the place of your skin, water instead of perspiration wets them and a fan moves the air. The air is drawn through the cooling pads and evaporates moisture. Heat is removed from the air, as it is drawn through the wet pads, dropping the air temperature and producing the cooling effect. The cooled air is then forced through a building or space and displaces the warm air out building openings, cooling the surroundings. In addition, air velocity increases the cooling effect as it moves over the skin or people in the airflow path.

Why use evaporative coolers in your workplace?
The WayCool/Pro-Kool evaporative coolers requires little space, has a low initial cost, is inexpensive and simple to operate and requires minimal scheduled maintenance. Due to the design and construction of the cooling pads, cooling efficiency is normally maintained near optimum throughout the lift of the pads. (Approx. two seasons) In many cases, evaporative coolers are a better solution than mechanical refrigeration systems because they are more economical to operate and maintain and do not use environmentally sensitive and costly refrigerants. Simply adding more units can accommodate larger areas. With proper sizing and application, a WayCool/Pro-Kool portable evaporative coolers can lower the effective air temperature by up to 20°. Even in high humidity, the efficiency of the WayCool/Pro-Kool evaporative cooler provides effective cooling.

Regular cleaning: The frequency with which the WayCool/Pro-Kool is cleaned will depend on the environment in which it is used. The WayCool/Pro-Kool evaporative cooler also acts as an air filter and removes dust and other particles from the air. This dirt collects on the cooling pads and lowers cooler efficiency. The more dirty the environment the more often it will need cleaning. In most cases the WayCool/Pro-Kool will need to be cleaned weekly. Operators manual is included when purchased. A dirty water supply will quickly reduce the unit’s performance and the unit will require more frequent cleaning to maintain cooling effectiveness. Always try to use a filtered, treated water supply.

Horizontal Air Flow Fans

What is HAF?
Small circulating fans operating continuously to create a gentle ‘racetrack’ air pattern in a greenhouse thus mixing the air mass. Other names for HAF fans are basket fans, stir fans, circulation fans, or mixing fans.

Why mix the air mass?
Air stratification practically eliminated. Corners of greenhouse are ‘scrubbed’ eliminating hot and cold spots. Condensation reduced. Carbon dioxide utilization improved. Humidity within the plant canopy is reduced.

How do we use them?
Place one VK12 every 50′ to 60′ feet and hang at gutter height. Place horizontally. No need to aim at crop or angle fans. Place two rows in each bay. One row going up. One row coming back. No need for complicated formulas.

Where do we use them?
All greenhouses large or small, whether naturally ventilated, mechanically ventilated, cooled, and or heated, will benefit from horizontal airflow. All plants whether flowers, vegetables, shrubs and trees will benefit from horizontal airflow.

Why Schaefer fans?
Schaefer fans have a patented guard allowing for more airflow, with less restriction than typical ‘basket’ style fans. Schaefer fans are very quiet because they are smaller and less restrictive. The Schaefer 12″ has airflow of competitors 20″ fans. Schaefer fans use totally enclosed, maintenance free farm duty motors. Schaefer fans come with a solid mount. A solid mount is important to the air pattern. If fans are hung with chains they can twist and sway creating a disruptive uneven air circulation pattern.

“We use Schaefer because they build a quality product, their service is second to none and they deliver product on time.” — Riverview Dairy LLP, Minnesota

“We use Schaefer because they have the expertise to help us properly ventilate our facilities and a quality product that they stand behind.” — Aurora Dairy, Colorado

Dairy Resources

White Papers
Dairy Cooling: Benefits and Strategies by Ian Atkins, Christopher Choi, Brian Holmes
Dairy Cooling in Humid Subtropical Climates by Ian Atkins, Christopher Choi, Ray Bucklin
Dairy Cooling in Humid Continental Climates by Ian Atkins, Christopher Choi, Brian Holmes
Dairy Cooling in Arid and Semi-Arid Climates by Ian Atkins and Christopher Choi
Discuss heat stress characteristics and their effects on dairy production, and also the various systems and strategies now available for heat stress relief.

FlipFan Dairy Cooling System White Paper
By: John F. Smith; S.D. Anderson; B.J. Bradford; J.P. Harner; C.B. Tucker; J.D. Allen; L.W. Hall; S. Rungruang; R.J. Collier, November 2011, shows the effects of adjustable and stationary fans coupled with misters on core body temperature and resting behavior of lactating dairy cows in a semi-arid climate.

To request a copy, please email us using the Contact Us form and check the the box for “Yes, I am interested in the FlipFan White Paper” or give Customer Care a call at (800) 779-3267.

Product Booklet
Schaefer Dairy Cooling Equipment Booklet

Heat Stress Prevention Kit (2001)
Why Cooling is Important/Heat Index Chart (2013)
Schaefer Cow Comfort Solutions – Dairy application photos throughout the United States

Published Articles
Flipping over new technology by Ron Goble, May 2012
Keep cool in mind, even as temperatures drop by James Kleinke, October 2013
Heat Stress: The bottom line by James Kleinke, May 2014
Herd Health: Heat Abatement by James Kleinke, June 2014
Is heat stressing your herd? by James Kleinke, July 2014
Ventilation still key – even during cooler weather by James Kleinke, October 2014
Maintenance is key element of successful heat abatement by James Kleinke, April 2015
How to mitigate your cows’ heat stress in the summer by James Kleinke, July 2015
Ventilation still key – en Français by James Kleinke, September 2015
Prioritize you dairy’s cooling and ventilation by James Kleinke, November 2015

“We have been using Schaefer for the past 10 years and continue to use them on our projects. They are a great company to work with and have a quality American made product that they stand behind.” — Pagel’s Ponderosa Dairy LLC, Wisconsin

“We now have over 100 tent fans in our rental fleet! We choose Schaefer because the equipment matches our tents, it is built tough for rental abuse, and the service is top notch! The fans paid for themselves in 2 rentals and in the past two years have provided an impressive 2500% ROI!” — Skyline Tent Company, Charlottesville, VA

Videos and Images

Learn more about Schaefer products from our videos and images.

Americ® Confined Space Ventilators Sales Video
HotZone® Adjustable Tripod Electric Radiant Heater
HotZone® Portable Electric Radiant Heater
Greenhouse Ventilation
Zubri™ Outdoor Portable Patio Pedestal Heaters
BIGDOG® 72″ Ventilator
Schaefer FlipFan® Dairy Cooling System with Testimonial
Schaefer FlipFan® Dairy Cooling System, no audio
WayCool® and Pro-Kool® Operation Guide, no audio
Aluminum Slant Wall Exhaust installation – Ohio State University
Versa-Kool™ Mobile Drum Fan Sales Video
SuperCooler™ Dairy Cooling System Product Video
MASTER® Kerosene Forced Air Heaters Operating Instructions
MASTER® Silent Drive® Dual Fuel Forced Air Heaters Operating Instructions

Slide Show
Schaefer Cow Comfort Solutions
Application photos of dairies located throughout the United States.

Do you have Schaefer products currently installed in your facility? Send us a picture.

Email and put “Marketing Photos” in the subject line.


“Doing business in Alabama and having parties in blistering heat requires dependable, hardworking, and innovative products to cool people down. That is why we have a large inventory of WayCool Portable Evaporative Coolers and 12″ Versa-Kool tent fans. They are very economical and have had a huge ROI for us. Roll Tide!” — Chris Strickland, Game Day Tents, Tuscaloosa, AL

“I recently purchased a Schaefer Portable Drum Fan for our school district’s warehouse. Its performance exceeded our expectations, especially in light of the extraordinarily hot Dallas temperatures. I just wanted to acknowledge the fine craftsmanship and performance of this product and congratulate the workers on your manufacturing line.” — James Cason, Richardson ISD Purchasing Dept., Richardson, TX

“The Schaefer 8” and 12” variable speed Versa-Kool HAF fans have exceeded all of our expectations. They keep the temperature consistent. They are low maintenance. And the unexpected bonus is, they are quiet. We no longer need to turn fans off when classes are in the greenhouse. I would absolutely recommend Schaefer HAF fans.” — Joan Leonard, Program Manager, Arts & Sciences Plant Growth Facilities, Ohio State University

“I just wanted to compliment Schaefer on the quality of your HAF fans. The fans have been in operation in our propagation range with fog and have been running 24 hours a day for the last 13-14 years. I wished everything in our greenhouse lasted as long as a Schaefer fans.” — Danny Takao, Garden Bloomers Takao Nursery, Fresno, CA

“. . . the Zubri from Schaefer, not only does it provide reliable heat and style that my clients expect from our company, it’s the ease and quickness of installation and breakdown that also save time and money. The innovative boxed container that protects such a fine heater is the key. I would highly recommend to all rental companies to depend on Zubri heaters as I do.” — Charles Balcer, Loane Bros., Baltimore, MD

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