Cottonwood trees are in full bloom in May and June. Their cottony seeds can clog air filters in a few short days. If you live in an area of the country with Cottonwood trees, it’s advisable to check your building’s air filters during this time. Cottonwood seed is a major contributor of cooling equipment fouling. This naturally occurring airborne contaminant (generated by the Poplar Tree) usually affects operations from May thru early August, hence, companies that rely upon process cooling must clean their equipment frequently during this period or risk failure.
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