Equal pressure
Full control of air in and air out

The equal pressure system is a ventilation system used for poultry production facilities. The system is intended for temperate regions of the world and can be adapted to most livestock houses.

In an equal pressure system, the fresh air is supplied through roof inlets, and the outlet is conducted through chimneys – both with active fans ensuring a neutral pressure.

Especially free-range poultry houses require equal pressure ventilation. The birds have access to free-range areas through pop-holes. You can use the equal pressure ventilation system to prevent the air from entering through the pop-holes. This way, you maintain an optimum litter and a uniform distribution of the birds in the livestock house.

The air intake and exhaust units are adjusted according to the Dynamic MultiStep principle, which substantially reduces power consumption.


  • Exact control of the ventilation capacity and thus the climate
  • Uniform distribution of the birds
  • Suited for monoblock houses, where you cannot use wall inlets
  • Suited for non-sealed houses, for instance, old leaky houses or free-range houses
  • Robust system in wintertime where recirculation helps save on heating costs


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Essentials in an equal pressure ventilation system

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