Small Curtain Opening vs. Adjustable Air Inlets

Maintaining good air quality without getting a large fuel bill at the end of the month is a challenge all broiler and pullet growers face during the winter months. It seems growers have two options; they can increase the timer settings on their minimum ventilation fans and have good air quality with a high fuel cost, or reduce timer fan settings and have poor air quality with a low fuel cost. There just doesn't seem to be a way to have both a good environment and low fuel bills.