The leader in 4-seasons ventilation and cooling.

Tunnel Plus designs systems for the agricultural industry, focusing on dairy and swine production.

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What we do

Engineering the ideal climate

Tunnel Plus dramatically improves air quality in your facilities as well as cools the animals’ core body temperatures, which results in healthier animals. Better air quality and reducing heat stress leads to a healthier bottom line for you, the producer.

We design systems for any and every area in new builds or in retrofitting older facilities to meet today’s ventilation needs. Installs include dairy freestall barns, holding areas, tie stall barns, bedded packs, and calf barns. In the swine arena, we design systems for sow gestation areas, finishing barns, and boar stud facilities.

We pride ourselves on designing ventilation systems correctly, and offering the highest quality equipment on the market today.

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Dairy Solutions

Maximize production efficiency and cow comfort with our Tunnel Plus 4-Season Ventilation and Cooling Solutions.

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Swine Solutions

Improve growth rates and reduce heat stress with our Tunnel Plus swine solutions.

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What Our Customers Say About Us

"Milk production has held steady and we have not seen the dramatic drop during high heat. There has also been improvement in our preg checks - from 49% confirmed pregnant to 70% over the summers since installing...We planned for a ROI of 2.5 years and we are on track to reach that." "I don’t see lathered faces, there is no more bunching and the cows use the stalls all of the way through the barn." "The variable speed is great in the spring and fall because the fan automatically adjusts to the cows' needs. I feel that we had less pneumonia because the air quality was automatically improved. That little fan blows an impressive amount of air, and then the water takes cooling to the next level."

Harold & Clarence Deering

Honor Roll Farm

“At first we were struck by the cost but as soon as we saw what it was capable of, we decided to give it a try. We started with one barn and saw such a big impact that a month later did the other. We feel like the cost has been easily recouped in just over a year.” “The cows definitely use the stalls a lot more. That’s what we want to see – cows lying down and chewing their cud. That provides lots of benefits that you can’t even put a number on like better hoof health and improved repro.” “We really like the variable speed, especially in the spring and fall. It takes the worry out of make decisions for the animal’s benefit. We no longer have to decide if we should turn the fans on or off, it’s done automatically.”