The need for improved Indoor Air Quality (IAQ) has created a need for a new generation of air filters. Airguard Powerguard filters fit this need as they not only capture more dirt, but also capture smaller micron particles including pollen and dustmites.
Unique New Media Design –
Only PowerGuard filters are made with a totally new concept in media design consisting of 100% synthetic fibers that are needled, and then electrostatically charged. The combined effect of these two processes sets a new standard in pleated filter performance – 25 – 30% initial efficiency with 70% minimum efficiency on 1 – 3 micron particles. PowerGuard filters are ideally suited for applications requiring higher efficiency on fine particulate compared to standard pleated filters.
Needled Fibers –
The needling process thoroughly entangles the fibers throughout the entire depth of the media creating a dense mat that produces higher mechanical efficiency. The intertwined fibers maximize mechanical efficiency at lower resistance than other pleated filters designed for higher MERV Values. Depth loading provides high dust holding capacity.
Electrostatically Charged –
After the media has been needled it is exposed to an extremely high voltage which supercharges the fibers throughout the entire depth of the media. The charged fibers attract fine particulate like dust on a TV screen.
Electrostatic Charge Enhances Efficiency on Fine Particulate – MERV - 11
To qualify for a MERV – 11 Value per ASHRAE Standard 52.2, the filter must achieve between 65% and 80% efficiency on 1 – 3 micron particles and greater than 85% on 3 – 10 micron particles. PowerGuard filters exceed these values; other filters fall short. The reason PowerGuard filters excel in efficiency on fine particulate is the unique media design – 100% synthetic fibers, needled, then supercharged.
ASHRAE initial and average dust spot efficiencies are also excellent.
PowerGuard pleats are formed by an expanded metal grid made of rust resistant galvanized steel laminated to the air leaving side of the supercharged media. The metal grid maintains pleat shape and prevents fluttering. Pleat stability in operation prevents dirt particles from shaking loose and blowing down stream. Consistent pleat shape also assures maximum air flow with minimum resistance and high dirt loading characteristics throughout the life of the filter.
Bonded Media Pack Prevents Bypass –
The PowerGuard frame is made from two mating pieces of die cut beverage board that form a double wall around the entire perimeter of the filter. The entire inside surface of both pieces of the frame are coated with adhesive to bond with the media pack at all points of contact. This forms a totally unitized construction and prevents bypass.
The PowerGuard filters are unusually strong and rigid and will not rack, warp, or bend under normal handling or operating conditions. Media pack support members on both sides of the filter add rigidity and help hold pleat shape as the dirt load builds and resistance rises. These cross members are an integral part of the die cut frame construction.