Exceptionally useful in the HVAC industry, especially in cooling tower applications, the TEKLEEN® line of ABW (automatic backwash) filters eliminate contamination, which can circulate through heat exchangers, chillers, and compressors, making the cooling system pump harder, thus lowering the efficiency of the system, said the company. They filter contamination caused by airborne dust, sand, pollen, algae, and pipe scales, thus reducing maintenance and operations costs. The self-cleaning water filters operate on line pressure alone. The self-cleaning process is triggered by a pressure differential and is accomplished in seconds without interrupting the main flow. The filters are offered in stainless steel construction.