Home Climate Solutions Dairy Open barn
Dairy-breeze-fan-768

Boost productivity through better climate

In open barns, animals are more vulnerable to heat stress, cold drafts, and airborne contaminants. These factors reduce feed intake, lower milk yields, and negatively affect cow welfare. Our climate solutions, ranging from high-efficiency fans, high-pressure fogging system to air filtration and curtains, are designed to ensure optimal airflow, temperature regulation, and energy performance year-round.

Explore our range of fans

Designed for flexibility and performance

Whether your barn is cross-ventilated, tunnel-ventilated, or relies primarily on natural air exchange, our systems can be adapted to:

Dairy-air-quality-768

Improve air movement and reduce hotspots

Dairy-heat-stress

Limit heat stress during peak summer

Dairy-farm-winter-768

Prevent cold air drafts in winter months

Dairy-energy-efficiency-768

Enhance energy efficiency with smart automation

Dairy-open-barn-768

How open barn ventilation works

Open dairy barns rely primarily on natural ventilation, allowing fresh air to flow freely through the structure without the need for full mechanical systems. This passive airflow helps manage humidity and remove heat and gases. but it’s not always enough, especially during the warmer months or in regions with limited wind movement.
To ensure effective air circulation, we support open barns with a combination of natural ventilation principles and strategic mechanical aids.

Key components for effective ventilation:

  • Natural airflow design: Sidewall openings and open ridges enable wind-driven ventilation, helping to remove heat and humidity while bringing in fresh air.
  • High volume–low speed (HVLS) fans: Installed above resting areas to enhance air movement on still days, improving heat dissipation without creating drafts.
  • Low Volume High Speed (LVHS) fans as the EMS or MFS generates high airspeed on the animals to reduce the heat stress for animals during high metabolic rate.

Contact us for a free consultation

Explore our ventilation solutions

FAQ

Find answers to common questions about climate control and ventilation in open dairy barns, and how to ensure optimal comfort and productivity for your herd.

How does natural ventilation work in open dairy barns?

Natural ventilation relies on wind and thermal buoyancy to move air through sidewall openings and roof ridges. This passive airflow removes heat, moisture, and harmful gases, replacing them with cooler, fresh air from outside—especially effective in well-oriented barns.

Are HVLS fans necessary in open barns?

Yes, High Volume–Low Speed (HVLS) fans are highly recommended—especially during hot, still days when natural airflow alone is insufficient. These fans gently circulate large volumes of air, effectively mixing it to prevent thermal stratification and ensure a more uniform temperature throughout the barn. In open barns, they also help improve litter quality and generate a gentle breeze over the animals. This enhances heat dissipation, eliminates uncomfortable cold spots or harsh drafts, and contributes to more stable temperatures and improved animal comfort.

What problems arise from poor ventilation in open barns?

Inadequate ventilation can lead to heat stress, high humidity, dust and ammonia buildup, all of which compromise cow health, reduce productivity, and increase operational costs.