SFM Łuczak Filters has been producing Nanowave filters made of a special, energy-efficient Nanowave fiber for over a decade. The fibers are made of polypropylene and have a 3-fold higher dust absorption capacity due to their special construction and varied fiber thickness. However, before customers decided to purchase Nanowave filters, many of them decided to test the above properties. It should be noted that due to the extended service life of Nanowave filters compared to regular synthetic filters, the testing period is at least 1 year.

The filters were tested by one of the largest clinical hospitals in Warsaw, which originally used M5, F7, and F9 pocket synthetic filters, which were replaced during the test period with Nanowave pocket filters in the same classes and dimensions. During the experiment, the number of filter replacements in some air handling units decreased from 4 to 1 and even from 9 to 1, saving a total of 550 filters, as 130 Nanowave filters were used, while 680 regular filters were used in the previous period. During the test, the energy consumption of the ventilation systems after using Nanowave filters was 36,561 KWh, compared to 77,053 KWh during the same period when regular synthetic filters were used. “The use of Nanowave filters in the hospital’s air handling units confirmed their high performance parameters. Nanowave filters are characterized by high energy efficiency resulting from low air flow resistance through the filter material and a long period of use due to the multiplication of the filter material’s filtration surface, resulting in increased accumulation of captured pollutants. This allowed for significant reduction in maintenance costs of the ventilation and air conditioning systems, directly related to the reduced use of electrical energy and the reduced frequency of replacement of the discussed filters”, as the customer wrote in a reference letter after the end of the experiment.

The second noteworthy test was conducted by one of the largest Polish dairy producers, due to the highest standards in the food industry. It was established that during 12 months of use, Nanowave filters constantly maintained the highest filtration properties: the initial confirmed effectiveness for X test center for ePM2.5 particles was 86% and for ePM1 was 78%, while for Y test center the initial effectiveness for ePM2.5 was 96% and for ePM1 was 95%, where the concentrations of suspended dust outside reached 21 micrograms/m3 for ePM2.5 particles and 6 micrograms/m3 for ePM1. After one year of use, Nanowave filters from the X center lost 1% efficiency for ePM1 and 2.6% for ePM2.5, while those from the Y center lost 3% efficiency for ePM1 and 20.2% for ePM2.5. The longer lifespan of Nanowave filters reduced the filter replacement rate by half.

In both cases, we are dealing with stringent air quality requirements, as both the hospital as a medical facility and the dairy production plant are subject to regulations regarding sterility in rooms, especially in operating rooms.

In both cases, we are dealing with restrictive air quality requirements, as both the hospital as a medical facility is subject to regulations regarding sterility in rooms, especially in operating rooms, and the dairy plant producing food is subject to quality requirements such as HACCP. This means that customers in the surveyed facilities expected the highest quality air filtration, placing high demands on Nanowave filters. The test results, which were described in relevant reports (based on recordings from monitored units), confirming energy efficiency and longer filter lifespan reducing the amount of waste for disposal, ultimately convinced customers to choose Nanowave filters.