Hot weather tips for Poultry Farmers: How do you protect your flock during the summer? When temperatures and humidity are high, proper ventilation in poultry houses is essential. Even though some houses rely extensively on natural air movement, most producers add circulation fans. Generally, these fans should be spaced 25-30 feet apart in curtain layer houses and 40-50 feet apart in broiler houses. During periods of extended hot weather, turn thermostats down to 75 deg. F (or lower) and leave circulation fans running through the cool evening hours. For more info see: https://www.thepoultrysite.com/articles/hot-weather-management-of-poultry