COTTONWOOD FILTERS & SCREENS
Cottonwood filter screens create a first line of defense for HVAC systems exposed to outdoor air. By intercepting airborne seeds, leaves, and debris before they reach coils, they prevent the buildup that restricts airflow and drives up energy use. Installed over air intakes, condenser panels, or cooling tower openings, a cottonwood filter screen keeps system surfaces clean and efficient through heavy pollen and cottonwood seasons.
With a variety of mount options available, our PreVent Air Intake Screen is made of a fine yet breathable polypropylene mesh maintains steady air movement while blocking large contaminants that would otherwise lodge deep within fins and coils.
COTTONWOOD FILTERS & SCREENS
Cottonwood Screens. Like a Screen Door. But for Your HVAC.
Cottonwood filter screens create a first line of defense for HVAC systems exposed to outdoor air. By intercepting airborne seeds, leaves, and debris before they reach coils, they prevent the buildup that restricts airflow and drives up energy use. Installed over air intakes, condenser panels, or cooling tower openings, a cottonwood filter screen keeps system surfaces clean and efficient through heavy pollen and cottonwood seasons.
With a variety of mount options available, our PreVent Air Intake Screen is made of a fine yet breathable polypropylene mesh maintains steady air movement while blocking large contaminants that would otherwise lodge deep within fins and coils.
Ready or not, cottonwood season is coming. Is your HVAC system actually ready for it? In certain regions, cottonwood introduces a distinct challenge.
For facility managers, cottonwood season is more than just a nuisance. It brings downtime, unplanned maintenance and a spike in labor and energy expenses — especially for buildings that rely on unprotected air intakes.
Once cottonwood builds up inside a system, it can create a thick, paste-like sludge that’s difficult (and expensive) to clean. And it doesn’t just happen once. In some areas, facilities are forced to clean their systems multiple times in a single month to keep up. Unlike standard dust and pollen, cottonwood fibers interlock and "carpet" your intake HVAC components like air intake fins, heat transfer coils, cooling tower strainers and fill material. This can choke your airflow almost instantly—sometimes before the interior filter bank air filters even look "dirty."
Built for harsh environments, our washable reusable PreVent cottonwood air filters are UV protected, moisture and corrosion resistant and customizable. With frame and mount options available to choose from, Rensa cottonwood air filters can be made for your specific application including but not limited to data centers and crypto mining, food processing, hospitals or any type of commercial and public building.
Choose PreVent cottonwood filters for HVAC air intake protection when durability, easy cleaning, and lifelong savings matter most.
Request a free sample today.
A Grand Rapids auto parts manufacturer replaced unreliable, manually cut polyester media with custom-fit, reusable PreVent screens—eliminating air bypass, protecting compressors from cottonwood and debris, and reducing costs in the process. Read the case study.
Cleaning our chillers was very time-consuming, so we spent a lot on labor. By using the PreVent filters, we don’t need to clean our units as frequently and have reduced our cleaning costs by almost 75%.
Paul B., Facility Director
MANASSA, VA
It's a great idea to protect HVAC condenser coils with PreVent screening, especially right after new equipment installation. Once the mount clips were inserted into the filter grommets, it took less than a minute to place the screening on the equipment and make adjustments. We've been relying on PreVent for over thirteen years.
Jim P., Planning Manager
ARGONNE NATIONAL LABORATORY, IL
The best money I've spent since I've worked at this facility. We're located along the river where cottonwood is everywhere — and PreVent was catching seeds mid-install. What we estimated as a 6-hour job with standard clips was done in under an hour with MagnaMount.
Dave C., HVAC Mechanical Contractor
PLAINFIELD, IL
Complete this form and a PreVent air intake expert will be in touch. Whether you're preparing for cottonwood season, protecting critical equipment, or looking to reduce maintenance costs year-round, we'll help you find the right custom solution for your application. You can even request a free sample to try our PreVent cottonwood screen out.
