Poultry & Livestock House Ventilation

Tunnel and minimum-ventilation fans, evaporative cooling and house heating built for an ammonia-laden, washdown environment where a ventilation failure is measured in animals, not in degrees.

  • 1,202products across this application
  • 514verified manufacturers
  • 6equipment groups

WhatTwo ventilation modes, sized separately

Animal-house ventilation runs in two entirely separate modes. Minimum ventilation operates in cold weather at the lowest rate that still removes ammonia, carbon dioxide and moisture — it is an air-quality function, not a cooling one. Tunnel ventilation operates in hot weather at the maximum rate the house can achieve, using air velocity over the birds to produce a wind-chill effect. The two modes need different equipment and are sized independently.

WhoWho buys livestock ventilation

Vertically integrated poultry companies, independent broiler and layer farm owners, swine and dairy operations, farm construction contractors, and regional agricultural equipment dealers who stock for their local grower base.

WhereGrid and site conditions on working farms

Brazil, India, Southeast Asia, the Middle East, Africa and Eastern Europe carry the volume, generally on 380 V three-phase supply with a real risk of grid interruption — which is why backup power and alarm systems are part of the specification rather than an accessory.

WhenThe window between flocks

New house construction, and replacement during the short window between flocks when the house is empty and can be worked on. That window is measured in days, so availability from stock frequently decides the order.

WhyCorrosion, and the cost of a stopped fan

Two things separate this scenario from general industrial ventilation. First, the air is genuinely corrosive: ammonia from litter, combined with regular high-pressure washdown and disinfectant, destroys ordinary galvanised steel and standard motor housings within a couple of years. Second, the consequence of failure is immediate and total — in a tunnel-ventilated house on a hot day, a flock can be lost in under thirty minutes if the fans stop. Redundancy, alarms and backup power are not upgrades in this scenario.

HowRating fans at real static pressure

Size the two modes separately: minimum ventilation from the animals' moisture and ammonia production at the coldest expected condition, tunnel ventilation from the target air velocity along the house at the hottest. Rate every fan at the static pressure the house actually operates at — a tunnel house with inlet baffles and an evaporative pad is not a free-air installation, and a fan chosen on free-air airflow will not deliver the velocity the birds need. Then check the airflow ratio, which tells you how much of that fan's output survives real static pressure. Finally, specify corrosion protection at the level the environment demands, and put ventilation on backup power with an independent high-temperature alarm.

Equipment this application needs

Axial Flow Fans Tunnel ventilation Axial Flow Fans672 Large-diameter, low-speed fans producing house-length air velocity for wind-chill cooling in hot weather. Exhaust Fans Minimum ventilation Exhaust Fans70 Small, precisely controlled units running intermittently in cold weather for air quality alone. Air Coolers Evaporative pads Air Coolers84 Pad cooling at the tunnel inlet, adding several degrees of drop on top of the wind-chill effect in dry climates. Heating Equipment Brooding heat Heating Equipment63 Chicks need house temperatures near 32–34 °C in the first week, falling weekly — a heating load that dwarfs anything the adult flock needs. Blowers Feed & air handling Blowers212 Feed conveying and positive-pressure inlet duties around the house. Ventilation Fan Parts Shutters, belts & spares Ventilation Fan Parts101 Shutters, belts, pulleys and motors — the consumables that decide whether the house keeps running between flocks.

What to check before you order

Corrosion Resistant 154
Ammonia plus washdown. This is the single specification that determines whether the fan lasts two years or ten.
Industrial Grade 977
Continuous duty, months without stopping, with no scheduled maintenance access while the house is occupied.
380V 1,427
Three-phase for tunnel fan banks.
Energy Saving 861
Fan energy is one of the largest controllable costs per bird produced.
IP55 / IP68 224
Sealed motors that survive direct high-pressure washing between flocks.

Products for this application

Questions buyers ask

What is the difference between minimum and tunnel ventilation?
They solve different problems. Minimum ventilation runs in cold weather at the lowest rate that still removes moisture, ammonia and CO₂ — its purpose is air quality, and running it any harder simply wastes heat. Tunnel ventilation runs in hot weather at maximum rate to create air velocity down the length of the house, cooling the animals by wind chill. A house needs both, sized independently.
Why do farm fans need special corrosion protection?
Litter releases ammonia continuously, and houses are washed down with water and disinfectant between flocks at high pressure. That combination attacks standard galvanised housings, fasteners and motor enclosures far faster than any industrial atmosphere. Fans built for this environment use protected or non-ferrous housings, sealed motors and corrosion-resistant fixings, and routinely last several times longer as a result.
What airflow rating should I compare fans on?
The airflow at realistic operating static pressure, not the free-air figure. A tunnel house with inlet baffles and an evaporative pad imposes meaningful resistance, and fans differ widely in how much of their output survives it. The ratio between rated airflow at pressure and free-air airflow is the number that predicts what the house will actually achieve.

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