Solar pool heating collectors have a number of unique characteristics that are better described on a dedicated certificate. Usually solar pool heaters make use of unglazed, polymeric collectors. Unlike glazed collectors (those with transparent covers over the solar absorbers), unglazed collectors are much more sensitive to wind and longwave (infrared) radiation. And pool applications differ seasonally with different combinations of average solar irradiance, ambient air temperature and wind speeds throughout the year. To help users better understand how the performance of the collector measured in laboratory testing, SRCC has developed a specialized OG-100 certificate for these collectors. For more information on the certificate and its features, click here.