Producers with tunnel-ventilated houses is power usage. This concern is warranted. The average tunnel-ventilated broiler house has eight, one-horsepower 48" fans and a one-horsepower fogging pump. If a producer were to operate all eight fans 24 hours a day and the fogging pump 12 hours a day for a month, it would cost about $675. Add to this the cost of operating lights, feeder motors, etc. and it is possible for a producer to spend $800 or more a month per house for electricity.