Airflow Measurement for Acceptable Indoor Air Quality

Attn: Mr. Jim Goode, CEO

Dear Jim:
"As a 20-year member of ASHRAE and a voting member of standards committee SSPC 62.1, the US Green Building Council and an associate member of the International Code Council; I am very much aware of the importance of both dilution ventilation and contaminant control for the maintenance of acceptable indoor air quality.
I am pleased to say that I have first-hand experience with the effectiveness of Fiberlene filters,having used them in our office and in my home during the past 10 years. The nature of the passive electrostatic charge of the filter materials helps arrest airborne particulates while allowing return air to pass without excessive pressure losses and associated fan energy costs. They have been so effective that amount of dust in my home was noticeably reduced. It amazed the contractor who recently replaced my heat pump to see how clean the inside of the air handler, fan and duct work was.
What I love most about the filters is their wash-ability. Just hosing them down until the water runs clear. Occasionally, I would prep the cleaning by using some mild cleaner or detergent, primarily to make them look better, but that was it.
I have also learned that when I originally ordered filters too small for the return opening, when the filters begin to load, the suction force of the fan coming on can slam the filter against the upper framing. This banging became a very effective way of reminding me when to clean the filters. I came back to Fiberlene after ten years to order some that where a little closer to the actual opening size. Now I'm not startled in the middle of a winter's night by the filter repositioning itself. Neither do I get any unfiltered bypass air, having corrected my sizing error.

Just one of life's little amusements. Thanks again. The product works great."

Len Damiano
Vice President Marketing & International Sales