The media saturation effectiveness of an evaporative cooler, like the Champion 5000 DD 6500 CFM Down-Draft Roof Evaporative Cooler, refers to how well the cooling media (the pads through which air is drawn) can absorb water and cool the air passing through it. Media Saturation Effectiveness: For evaporative coolers, the media saturation effectiveness is often given as a percentage. This percentage indicates how close the air exiting the cooler is to the wet-bulb temperature (the lowest temperature air can reach through evaporation). Champion 5000 DD 6500 CFM Evaporative Cooler: While specific effectiveness can vary slightly based on conditions such as humidity, temperature, and maintenance, Champion evaporative coolers typically use high-quality cooling media that achieve a saturation effectiveness of around 80-90%. Factors Affecting Effectiveness: Media Quality: The quality and type of cooling pads used can significantly affect the saturation effectiveness. Aspen or rigid media pads are common and effective. Air Flow: Proper air flow ensures that air passes evenly through the cooling media. Water Distribution: An even water distribution system ensures that the media remains uniformly wet. Maintenance: Regular cleaning and replacement of cooling pads ensure optimal performance. Specific Media Information: Champion's evaporative coolers, including the 5000 DD model, often use rigid media pads which are known for their high saturation efficiency. If you need the exact saturation effectiveness for your specific model, refer to the product manual or contact Champion directly. Contact Information for Champion: