It is always exciting to see summer coming after winter and spring conditions. After cold months, nobody complains when the outside thermometer is claiming up each day announcing really warm summer days. Pretty soon, the ventilation system of your barn will have to work at full capacity, and like any other piece of equipment, it will provide you with satisfaction only if it is well set and in really good working conditions. Before we get to those warm days, now is the perfect time to verify the operation of all system components and to ensure that your controller is well adjusted.

The temperature setpoint for grower-finisher pigs can essentially stay the same over summer and winter periods. It is sometime suggested that summer temperature setpoint should be slightly increased compared to winter recommendations to reduce daily temperature fluctuations occurring during hot periods. Two experiments conducted at Prairie Swine Centre Inc. and recently published indicated that healthy pigs could adequately deal with a large daily temperature fluctuation (up to 15A