Permatron's PreVent® wrap-around central air conditioning (PREVENTWA3) is a permanent, washable, cut-to-size synthetic fabric. Measuring 38 x 110 inches. The filter is affixed to the outer perimeter of the air intake fins and held in place by three 20" bungee cords (included).
- Save Money - Reduce HVAC energy bill more than 20%
- Reduce Repairs - Maintenance shows a 30% repair reduction
- Easy to Clean - Brush off or hose off with water while on or off unit
As the air conditioner runs, the filter traps airborne particulates, cottonwood, pollen and bugs before they enter the condenser fins. This clog reduces air flow needed and as a result loses its cooling capacity and uses more energy.
Built with durability in mind, the filter's black PVC coated polyester high abrasion media is UV protected. PreVent® Equipment Protection Filters are the standard for large commercial systems where improved efficiency results in major savings. PreVent® will stand up to hostile environments including corrosive areas, UV exposure and fluctuating weather conditions. Permatron reassure a 5 year warranty.
Clean Coils + Good Air Flow = Cool Air

Here is a two year old air conditioner. Being an hvac engineer, I paid $$$ for energy saving efficiency.
But it has now sucked in cedar mulch and pollen from a nearby flowering dogwood.
My air conditioner looks new, but close inspection shows the loss of efficiency.
As a result, the equipment loses its air flow, cooling capability, electrical cost rise and equipment can break down early.
A clean AC unit saves energy. PreVent® Installation and Cleaning
Installation is simple, just wrap the filter around the condensing unit and attached the three bungee cords.
The filter can be quickly cleaned with a vacuum while in place. For a more thorough cleaning, remove the filter and wash with a hose. Spray in a mild cleaner and hose off, spraying at the filters interior side forcing the dirt and debris back out the exterior side.
Permatron central AC filters are made in the USA. Permatron has been an air filtration manufacturer since 1957.
The PreVent® polypropylene fabric is manufactured by Permatron in Illinois. The filters are assembled, stitched and packaged at the Illinois plant.